Jaguar P1443 Code: Comprehensive EVAP System Leak Diagnosis Guide

Understanding the Jaguar P1443 Diagnostic Trouble Code

When your Jaguar’s check engine light illuminates and a diagnostic scan reveals code P1443, you’re dealing with a specific issue within the Evaporative Emission Control (EVAP) system. This code indicates a detected leak in the EVAP system, specifically related to the control circuit or a mechanical failure that allows fuel vapors to escape into the atmosphere. The EVAP system is a critical component of your vehicle’s emissions control system, designed to prevent gasoline vapors from the fuel tank from being released into the environment.

What Does P1443 Mean on a Jaguar?

P1443 is an OBD-II diagnostic trouble code that signifies “Evaporative Emission Control System Leak Detected”. In Jaguar vehicles, this code specifically points to a fault in the system’s ability to maintain vacuum or detect leaks during its self-test cycle. The vehicle’s Powertrain Control Module (PCM) continuously monitors the EVAP system for integrity and when it detects a leak larger than a specified threshold (typically 0.020 inches), it stores the P1443 code and illuminates the check engine light.

How the Jaguar EVAP System Operates

The EVAP system in your Jaguar is a sealed network designed to capture and store fuel vapors from the fuel tank, then redirect them to the engine for combustion. Key components include:

Charcoal canister (vapor storage)
Purge control valve/solenoid
Vent control valve
Fuel tank pressure sensor
Various hoses and connections
Fuel cap assembly

During normal operation, the system undergoes periodic self-tests, usually when specific driving conditions are met (fuel level between 15-85%, engine at operating temperature, vehicle at certain speeds).

Common Symptoms and Causes of P1443 in Jaguar Vehicles

Recognizing the symptoms of a P1443 code early can prevent more serious issues and potential emission test failures. While some symptoms may be subtle, others are more noticeable and warrant immediate attention.

Primary Symptoms of P1443 Jaguar Code

Illuminated check engine light (MIL)
Possible fuel odor near the vehicle
Decreased fuel efficiency
Failed emissions test
Rough idle in some cases
No noticeable drivability issues in many instances

Most Frequent Causes of P1443 in Jaguars

Loose, damaged, or missing fuel cap
Cracked or deteriorated EVAP system hoses
Faulty purge control valve/solenoid
Malfunctioning vent control valve
Damaged charcoal canister
Faulty fuel tank pressure sensor
Corroded or damaged electrical connectors
Physical damage to EVAP system components

Professional Diagnostic Procedure for Jaguar P1443

Diagnosing a P1443 code requires a systematic approach to identify the source of the leak or electrical fault. Professional technicians follow specific protocols to efficiently locate and repair the issue.

Initial Inspection and Preliminary Checks

Begin with the simplest and most common causes before proceeding to more complex diagnostics:

Verify the fuel cap is properly tightened (click 3 times minimum)
Inspect the fuel cap seal for damage or deterioration
Visually inspect all accessible EVAP system hoses for cracks, splits, or disconnections
Check for physical damage to the charcoal canister
Inspect electrical connectors for corrosion or damage

Advanced Diagnostic Testing Methods

If preliminary checks don’t resolve the issue, proceed with these advanced diagnostic procedures:

Perform a smoke test on the EVAP system to visually identify leaks
Test purge and vent valves for proper operation using a scan tool
Check fuel tank pressure sensor readings with a professional scanner
Perform voltage and resistance tests on electrical components
Monitor EVAP system parameters during system self-tests

Component-Specific Testing Procedures

Each major component requires specific testing methods to verify proper operation:

Purge Valve Testing: Apply vacuum and voltage to verify operation
Vent Valve Testing: Check for proper opening and closing
Charcoal Canister Inspection: Check for physical damage or contamination
Fuel Tank Pressure Sensor: Verify accurate pressure readings
Wiring Harness Inspection: Check for continuity and short circuits

Repair Solutions and Prevention Strategies

Once the specific cause of the P1443 code is identified, appropriate repairs can be made. Understanding the repair process and implementing prevention strategies can save time and money in the long term.

Common Repair Procedures for P1443

Depending on the diagnosed cause, repairs may include:

Replacing the fuel cap with an OEM-quality replacement
Repairing or replacing damaged EVAP system hoses
Replacing faulty purge or vent control valves
Installing a new charcoal canister if damaged
Repairing wiring issues or replacing connectors
Replacing the fuel tank pressure sensor if faulty

Preventive Maintenance Tips

To prevent recurrence of P1443 and other EVAP system codes:

Always tighten the fuel cap until it clicks multiple times
Use only OEM or high-quality replacement fuel caps
Regularly inspect visible EVAP components during routine maintenance
Avoid overfilling the fuel tank beyond the automatic shutoff
Address any fuel odors immediately
Have the EVAP system inspected during regular service intervals

Post-Repair Verification Process

After completing repairs, proper verification is essential:

Clear the diagnostic trouble codes with an OBD2 scanner
Perform a complete drive cycle to allow the system to run self-tests
Verify that the check engine light remains off
Confirm that all monitors have completed successfully
Re-scan the system to ensure no codes have returned

Successfully diagnosing and repairing a P1443 code in your Jaguar requires patience and systematic troubleshooting. While some causes are simple and inexpensive to fix, others may require professional diagnosis and repair. Regular maintenance and prompt attention to check engine lights can prevent minor issues from developing into more serious, costly repairs.

P202B – Reductant Heater Control Circuit Low

How severe is this DTC?

A stored P202B code should be considered severe and addressed as soon as possible. The SCR system could be disabled because of this. Catalyst damage could occur if the conditions that contributed to the code being stored are not corrected in a timely manner.

What are some of the symptoms of the code?

Symptoms of a P202B trouble code may include:

Reduced fuel efficiency
Excessive black smoke from vehicle exhaust
Decreased engine performance
Other SCR-related codes

What are some common causes of the code?

Causes of this code may include:

Faulty reductant tank heater element
Open or shorted circuits in reductant tank heater control
Faulty SCR controller/PCM or programming error

What are the P202B troubleshooting steps?

A diagnostic scanner, digital volt/ohmmeter (DVOM), and vehicle-specific diagnostic information source will be needed to diagnose a P202B code.

You can use your vehicle information source to locate a technical service bulletin (TSB) that matches the vehicle’s year, make, and model; as well as engine size, stored codes, and presented symptoms. If you find one, it could provide helpful diagnostic information.

Use the scanner (connected to the vehicle’s diagnostic connector) to retrieve all stored codes and relevant freeze frame data. It’s a good idea to record this information before clearing the codes, then test drive the vehicle until the PCM enters readiness mode or the code resets.

If the PCM enters readiness mode at that point, the code is intermittent and may be much more difficult to diagnose. If this is the case, the conditions that contributed to the code being stored may need to worsen before an accurate diagnosis can be made.

If the code immediately resets, the next step in your diagnosis will require you to search your vehicle information source for diagnostic flowcharts, connector pinout diagrams, connector face views, and component testing procedures/specifications.

Step 1
Use the DVOM to test the reductant tank heater element according to manufacturer specifications. Heaters are typically blanket or pin type. Heating elements that don’t test within allowable maximum parameters should be considered faulty.

Step 2
Use your vehicle diagnostic information source and the DVOM to test the reductant heater circuit voltage (typically battery voltage) with the system activated. If current conditions don’t allow activation, use the scanner to manually activate the heater.

Step 3
If the reductant tank heater is functional, use the DVOM to test the input and output signal circuits of the fuse panel, PCM, and ignition switch. Disconnect all controllers before using the DVOM for testing.

Reductant tank heater systems are used exclusively in diesel engine vehicles and in colder climates

P202C – High Reductant Tank Heater Control Circuit

How Severe Is This DTC?

A stored P202C code should be considered severe and addressed as quickly as possible. The SCR system could be disabled because of this. Catalyst damage could occur if the conditions that contributed to the code being stored are not corrected in a timely manner.

What Are Some of the Symptoms of the Code?

Symptoms of a P202C trouble code may include:

Reduced fuel efficiency
Excessive black smoke from the vehicle’s exhaust
Decreased engine performance
Other SCR-related codes

What Are Some Common Causes of the Code?

Causes of this code may include:

Faulty reductant tank heater element
Open or shorted circuits in the reductant tank heater control
Faulty SCR controller/PCM or programming error

What Are the P202C Troubleshooting Steps?

A diagnostic scanner, digital volt/ohmmeter (DVOM), and vehicle-specific diagnostic information source will be needed to diagnose a P202C code.

If the PCM enters readiness mode at that point, the code is intermittent and may be much harder to diagnose. If this is the case, the conditions that contributed to the code being stored may need to worsen before an accurate diagnosis can be made.

Step 1
Use the DVOM to test the reductant tank heater element according to manufacturer specifications. Heaters are typically blanket or pin type. Heating elements that do not test within allowable maximum parameters should be considered faulty.

Step 3
If the reductant tank heater is functional, use the DVOM to test the input and output signal circuits from the fuse panel, PCM, and ignition switch. Disconnect all controllers before using the DVOM for testing.

Reductant tank heater systems are used exclusively in diesel-powered vehicles and in colder climates

P202D – Reductant Leak

How serious is this DTC?

A stored P202D code should be considered serious and addressed as soon as possible. The SCR system may be disabled because of this. Catalyst damage could occur if the conditions that contributed to the code being stored are not corrected in a timely manner.

What are some of the symptoms of the code?

Symptoms of a P202D trouble code may include:

Reduced fuel efficiency
Excessive black smoke from vehicle exhaust
Decreased engine performance
Other SCR-related codes

What are some common causes of the code?

Causes of this code may include:

Leak in the reductant tank or fluid lines
Internal leak in the reductant supply pump
Faulty reductant tank pressure sensor
Open or shorted circuits in the reductant supply control
Faulty SCR controller/PCM or programming error

What are the troubleshooting steps for P202D?

Ensure the reductant/regeneration supply system is not losing pressure (internally or externally). Activate the pump to create pressure and inspect the system for external leaks. Use a fuel pressure tester to manually monitor reductant system pressure. Check the supply pump and injector for leaks. If leaks are discovered (internal or external), they must be repaired before continuing diagnosis.

A diagnostic scanner, digital volt/ohmmeter (DVOM), and vehicle-specific diagnostic information source will be required to diagnose a P202D code.

If the PCM enters readiness mode at this point, the code is intermittent and may be much more difficult to diagnose. If this is the case, the conditions that contributed to the code being stored may need to worsen before an accurate diagnosis can be made.

Step 1
Use the DVOM to test the reductant system pressure sensors according to manufacturer specifications. Components that test outside allowable parameters should be considered defective.

Step 2
Use your vehicle diagnostic information source and the DVOM to test the reductant supply pump voltage (typically battery voltage) with the pump activated. If current conditions don’t allow activation, use the scanner to manually activate the pump.

Step 3
If the reductant supply pump is functional, use the DVOM to test the input and output signal circuits of the fuse panel, PCM, and ignition switch. Disconnect all controllers before using the DVOM for testing.

Reductant leak codes are often attributed to internally leaking supply pumps

P202E – Reductant Injector Valve B1U1 Range/Performance

How severe is this DTC?

A stored P202E code should be considered severe and addressed as soon as possible. The SCR system may be disabled because of this. Catalyst damage could occur if the conditions that contributed to the code being stored are not corrected in a timely manner.

What are some of the symptoms of the code?

Symptoms of a P202E trouble code may include:

Decreased engine performance
Excessive black smoke from the vehicle’s exhaust
Reduced fuel efficiency
Other SCR-related codes

What are some common causes of the code?

Causes of this code may include:

Faulty reductant injection valve
Open or shorted circuits in the reductant injection valve control
Insufficient DEF in the tank
Faulty SCR controller/PCM or programming error

What are the troubleshooting steps for P202E?

You will need access to a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of vehicle-specific diagnostic information to diagnose a P202E code.

If you can find a technical service bulletin (TSB) that matches the vehicle’s year, make, and model; as well as the engine size, stored code(s), and presented symptoms, it could provide helpful diagnostic information.

You’ll want to start your diagnosis with a visual inspection of the reductant heater system harnesses and connectors. Burned or damaged wiring and/or connectors should be repaired or replaced before continuing.

Proceed by connecting the scanner to the vehicle’s diagnostic connector and retrieving all stored codes and relevant freeze frame data. Note this information before clearing the codes and test drive the vehicle until the PCM enters readiness mode or the code resets.

The code is intermittent and may be much harder to diagnose (for now) if the PCM enters readiness mode. If this is the case, the conditions that contributed to the code being stored may need to worsen before an accurate diagnosis can be made.

If the code resets, consult your vehicle information source for diagnostic flowcharts, connector pinout diagrams, connector face views, as well as component testing procedures and specifications. This information will be needed to complete the next step of your diagnosis.

Use the DVOM to test the SCR control system power supply. Test fuses with the circuit loaded to avoid misdiagnosis. If proper power and ground circuits are detected, use the scanner to activate the reductant injector valve (solenoid) and test the output control circuit voltage. If voltage is insufficient, suspect the controller is faulty or has encountered a programming error.

If the voltage output circuit is within parameters, use the DVOM to test the reductant injection valve in question. If the valve does not meet manufacturer specifications, suspect it has failed.

The reductant injection valve is actually a solenoid injector that sprays reductant fluid into the exhaust

P202F – Reductant / Regeneration Supply Control Circuit Range / Performance

How Severe Is This DTC?

A stored P202F code should be considered severe and addressed as quickly as possible. The SCR system may be disabled because of this. Catalyst damage could occur if the conditions that contributed to the code being stored are not corrected in a timely manner.

What Are Some of the Symptoms of the Code?

Symptoms of a P202F trouble code may include:

Reduced fuel efficiency
Excessive black smoke from the vehicle’s exhaust
Decreased engine performance
Other SCR-related codes

What Are Some Common Causes of the Code?

Causes of this code may include:

Faulty reductant supply pump (overload)
Open or shorted circuits in the reductant supply control
Faulty SCR controller/PCM or programming error

What Are the P202F Troubleshooting Steps?

A diagnostic scanner, digital volt/ohmmeter (DVOM), and vehicle-specific diagnostic information source will be needed to diagnose a P202F code.

You can use your vehicle information source to locate a Technical Service Bulletin (TSB) that matches the vehicle’s year, make, and model; as well as engine size, stored codes, and presented symptoms. If you find one, it may provide helpful diagnostic information.

Step 1
Use the DVOM to test the reductant tank supply pump according to manufacturer specifications. Components that do not test within allowable parameters should be considered faulty.

Reductant supply pump control codes are often attributed to supply pumps drawing excessive voltage

P2030 – Fuel Heating Performance

How serious is this DTC?

A stored P2030 code will likely be accompanied by a lack of heat in the cabin. The stored code indicates that an electrical issue or a severe mechanical failure has occurred. In very cold weather, the conditions that led to storing a code of this nature must be corrected as quickly as possible.

What are some of the symptoms of the code?

Symptoms of a P2030 fault code may include:

No heat in the cabin
Excessive heat in the cabin
The air conditioning fan may be temporarily disabled
No symptoms may appear

What are some common causes of the code?

Causes of this code may include:

Faulty temperature sensor (air or coolant)
Fuel heater injector malfunction
Defective fuel heater burner/igniter
Shorted or open wiring or connectors in the fuel heater circuit
Faulty PCM or programming error

What are the troubleshooting steps for P2030?

A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of vehicle-specific diagnostic information will be needed to diagnose a P2030 code.

Use the scanner (connected to the vehicle’s diagnostic connector) to retrieve all stored codes and relevant freeze frame data. It’s a good idea to note this information before clearing the codes, then test the vehicle until the PCM enters readiness mode or the code resets.

If the PCM enters readiness mode at that point, the code is intermittent and may be much harder to diagnose. If that’s the case, the conditions that contributed to storing the code may need to worsen before an accurate diagnosis can be made.

Step 1
Use the DVOM to test the temperature sensors (air or coolant) according to the manufacturer’s specifications. Sensors that do not test within the maximum allowable parameters should be considered faulty.

Step 2
Use your vehicle diagnostic information source and the DVOM to test the fuel heater injectors and igniters with the system activated. If weather conditions do not allow activation, use the scanner to activate it manually.

Step 3
If the system switches and other components are functional, use the DVOM to test the input and output signal circuits of the fuse panel, PCM, and ignition switch. Disconnect all controllers before using the DVOM for testing.

Fuel heater systems are primarily used in diesel engine vehicles and in extremely cold markets

OBD2 Code P1443 Infiniti: Diagnosis and Repair Guide

Understanding the Infiniti P1441 Code: An Overview

When your Infiniti’s check engine light illuminates and a diagnostic scan reveals the OBD2 trouble code P1443, you’re dealing with a specific issue within the Evaporative Emission Control (EVAP) system. This code is manufacturer-specific, primarily affecting Nissan and Infiniti vehicles. The P1443 code indicates a malfunction in the Evaporative Emission Control System Canister Control Valve Circuit, a critical component for managing fuel vapors and preventing their release into the atmosphere. Understanding this code is essential for maintaining your vehicle’s emissions compliance and overall performance.

What is the P1443 Code?

The P1443 diagnostic trouble code is defined as “Evaporative Emission Control System Canister Control Valve Circuit.” This code is stored when the vehicle’s Powertrain Control Module (PCM) detects an electrical fault or performance issue with the canister control valve circuit. This system is responsible for controlling the flow of fuel vapors from the charcoal canister to the engine intake for combustion, a process crucial for reducing hydrocarbon emissions.

How the EVAP System Works in Infiniti Vehicles

The Evaporative Emission Control system in your Infiniti is designed to capture and store fuel vapors from the fuel tank, preventing them from escaping into the atmosphere. The system consists of several key components:

Fuel tank and filler cap
Charcoal canister (vapor storage)
Canister vent control valve (also known as the vent solenoid)
Purge control valve (purge solenoid)
Various hoses and lines connecting the components
Pressure and vacuum sensors

The canister control valve, which is the focus of the P1443 code, manages the ventilation of the charcoal canister to the atmosphere, allowing fresh air to enter the system during the purging process.

Symptoms and Common Causes of P1443 in Infiniti

Recognizing the symptoms and understanding the potential causes of the P1443 code is the first step toward an effective repair. While the check engine light is the primary indicator, several other signs may accompany this code, helping you pinpoint the issue more accurately.

Primary Symptoms of P1443

When the P1443 code is active in your Infiniti, you may experience one or more of the following symptoms:

Illuminated Check Engine Light (MIL)
Failed emissions test
Reduced fuel efficiency
Possible fuel odor around the vehicle
Rough idling in some cases
Difficulty refueling (slow fuel fill)

It’s important to note that in many cases, the check engine light may be the only noticeable symptom, especially in the early stages of the issue.

Common Causes of P1443 Code

The P1443 code can be triggered by various issues within the EVAP system’s canister control circuit. The most common causes include:

Faulty canister vent control valve/solenoid
Open or short in the wiring harness to the control valve
Poor electrical connections at the valve connector
Blocked or pinched EVAP vent hose
Failed or failing Powertrain Control Module (PCM)
Corroded terminals or connectors in the circuit
Physical damage to the canister or vent valve

Diagnostic and Repair Procedures for P1443

Proper diagnosis is crucial for effectively resolving the P1443 code. A systematic approach will help you identify the root cause and prevent unnecessary parts replacement. This section provides a comprehensive diagnostic procedure tailored for Infiniti vehicles.

Step-by-Step Diagnostic Procedure

Follow these steps to accurately diagnose the P1443 code in your Infiniti:

Step 1: Begin with a visual inspection of the EVAP system components, including the canister, vent valve, and all associated hoses for obvious damage, disconnections, or blockages.
Step 2: Check the electrical connector at the canister vent control valve for corrosion, bent pins, or poor connection.
Step 3: Using a digital multimeter, test the resistance of the canister vent control valve. Compare your readings with manufacturer specifications (typically between 20-40 ohms at room temperature).
Step 4: Perform a voltage check at the valve connector with the ignition ON (engine off) to verify proper power supply from the PCM.
Step 5: Conduct a functional test of the vent valve by applying battery voltage directly to the component (if applicable) and listening for an audible click.
Step 6: Inspect the wiring harness between the PCM and the vent control valve for any signs of damage, chafing, or corrosion.
Step 7: Use a smoke machine to check for leaks in the EVAP system that might be related to the vent control circuit.

Repair and Replacement Guidelines

Once you’ve identified the root cause of the P1443 code, proceed with the appropriate repair:

Vent Valve Replacement: If the canister vent control valve is faulty, replacement is necessary. The valve is typically located near the fuel tank or charcoal canister. Always use OEM or high-quality replacement parts.
Wiring Repair: For wiring issues, repair or replace the affected wires using proper automotive-grade connectors and heat-shrink tubing.
Connector Repair: If the electrical connector is damaged, replace it with a new connector or repair kit specifically designed for automotive applications.
PCM Replacement: In rare cases where the PCM is confirmed faulty, replacement and programming by a qualified technician may be necessary.

Post-Repair Verification and Clearing the Code

After completing the repair, it’s essential to verify that the issue has been resolved:

Clear the P1443 code using your OBD2 scanner

Perform a drive cycle to allow the PCM to run its self-tests
Rescan the system to confirm the code doesn’t return
Monitor live data to ensure the EVAP system is functioning properly
Verify that all symptoms have been eliminated

If the code returns after repair, re-evaluate your diagnosis as there may be additional issues in the circuit or related components.

Preventive Maintenance and Professional Assistance

While the P1443 code indicates a specific electrical circuit issue, proper maintenance of your Infiniti’s EVAP system can help prevent related problems. Regular inspections of EVAP components during routine service can identify potential issues before they trigger fault codes.

When to Seek Professional Help

While many DIY enthusiasts can diagnose and repair the P1443 code, there are situations where professional assistance is recommended:

If you’re uncomfortable working with electrical systems
When the diagnosis points toward a potential PCM issue
If multiple EVAP codes are present alongside P1443
When you’ve performed repairs but the code persists
If you lack the proper diagnostic equipment

Professional technicians have access to manufacturer-specific diagnostic procedures, specialized tools, and the experience to efficiently resolve complex EVAP system issues.

Successfully diagnosing and repairing the P1443 code in your Infiniti requires a methodical approach and understanding of the EVAP system. By following the procedures outlined in this guide, you can restore your vehicle’s emissions system to proper operation, ensure compliance with environmental regulations, and maintain optimal performance. Remember that while this code is specific to the canister control valve circuit, comprehensive diagnosis is key to an effective and lasting repair.

P2031 Exhaust Gas Temperature Sensor Circuit, Bank 1 Sensor 2

Symptoms

The check engine light will illuminate and the computer will have set code P2031. No other symptoms will be easily recognizable.

Potential Causes

Causes

of this DTC may include:

Check for loose or corroded connectors or terminals, which is often the case
Broken wires or missing insulation can cause a direct short to ground
The sensor may have failed
A catback exhaust system without EGT provisions installed
It’s possible, though unlikely, that the computer has failed

P2031 Repair Procedures

Lift the vehicle and locate the sensor. For this code, it refers to the Bank 1 sensor, which is the engine side containing cylinder #1. It’s located between the exhaust manifold and the converter, or in the case of a diesel, before the diesel particulate filter (DPF). It looks different from oxygen sensors in that it’s only a two-wire plug. A vehicle with a turbo will have the sensor near the turbo’s exhaust inlet.
Check the connectors for any abnormalities such as corrosion or loose terminals. Follow the pigtail to its connector and check it as well.
Look for signs of missing insulation or bare wires that could be shorted to ground.

Disconnect the upstream connector and remove the EGT sensor. Check the resistance with an ohmmeter. Probe the two terminals of the connector. A good EGT will have about 150 ohms. If there’s very little resistance – below 50 ohms, replace the sensor.

Use a hairdryer or heat gun and heat the sensor while watching the ohmmeter. The resistance should decrease when the sensor is heated and increase when cooling. Otherwise, replace it.
If everything was good at this point, turn on the key and measure the voltage on the engine side of the pigtail. There should be 5 volts at the connector. Otherwise, replace the computer.
Another reason this code may be set is if the catalytic converter has been replaced in favor of a catback system. In most states, this is an illegal procedure subject to heavy fines if caught. It’s advisable to check local and national laws regarding removal of this system as it allows uncontrolled emissions into the atmosphere. It may work, but it’s everyone’s responsibility to do our part to keep our atmosphere clean for future generations.

Until this is repaired, the code can be reset by purchasing a 2.2 ohm resistor for pocket change at any electronics store. Simply discard the EGT sensor and plug the resistor into the engine-side electrical connector. Wrap it with tape and the computer will be convinced the EGT is working properly.

P2032 – Low temperature of exhaust gases in the EGT sensor circuit, bank 1 sensor 2

Symptoms

The check engine light will illuminate and the computer will have set code P2032. No other symptoms will be easily noticeable.

Potential Causes

Causes

of this DTC may include:

Check for loose or corroded connectors or terminals, which is often the case
Broken wires or missing insulation can cause a direct short to ground
The sensor may have failed
A catback exhaust system without EGT provisions installed
It is possible, but unlikely, that the computer has failed

P2032 Repair Procedures

Lift the vehicle and locate the sensor. For this code, it refers to the Bank 1 sensor, which is the engine side containing cylinder #1. It is located between the exhaust manifold and the converter, or in the case of a diesel, before the diesel particulate filter (DPF). It looks different from oxygen sensors in that it is only a two-wire plug. A vehicle with a turbo will have the sensor near the turbo’s exhaust inlet.
Check the connectors for any abnormalities such as corrosion or loose terminals. Follow the pigtail to its connector and check it as well.
Look for signs of missing insulation or exposed wires that could be shorted to ground.

Disconnect the upstream connector and remove the EGT sensor. Check the resistance with an ohmmeter. Probe the two terminals of the connector. A good EGT will have about 150 ohms. If there is very little resistance—below 50 ohms, replace the sensor.

Use a hairdryer or heat gun and heat the sensor while watching the ohmmeter. The resistance should decrease when the sensor is heated and increase as it cools. If not, replace it.
If everything was good at this point, turn on the key and measure the voltage on the engine side of the pigtail. There should be 5 volts at the connector. If not, replace the computer.
Another reason this code may be set is if the catalytic converter has been replaced in favor of a catback system. In most states, this is an illegal procedure subject to heavy fines if caught. It is advisable to check local and national laws regarding the removal of this system as it allows uncontrolled emissions into the atmosphere. It may work, but it is everyone’s responsibility to do our part to keep our atmosphere clean for future generations.