P1131 NISSAN – Swirl Control Valve Control Solenoid Valve

P1131 NISSAN Possible Causes

  • Faulty swirl control valve control solenoid valve
  • Swirl control valve control solenoid valve circuit open or shorted
  • Swirl control valve circuit open or shorted
  • Faulty swirl control valve
  • Faulty swirl control valve actuator

How to Fix NISSAN Code P1131?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The P1131 code is detected when an incorrect voltage signal is sent to the Engine Control Module (ECM) via the swirl control valve control solenoid valve.

Possible Symptoms

  • Check Engine Light On (or Service Engine Soon Warning Light)

P1131 NISSAN Meaning

This system has a swirl control valve in the intake passage of each cylinder.
At idle and during low engine speed operation, the swirl control valve closes. This increases the air speed in the intake passage, promoting fuel vaporization and creating a swirl in the combustion chamber.
Due to this operation, this system tends to increase the combustion speed of the gas mixture, improve fuel consumption, and enhance stability under operating conditions.
Additionally, except at idle and during low engine speed operation, this system opens the swirl control valve. In this condition, the system tends to increase power by improving intake efficiency through the reduction of intake flow resistance.
The solenoid valve controls the closed/open condition of the swirl control valve. This solenoid valve is operated by the Engine Control Module (ECM).
The swirl control valve control solenoid valve responds to signals from the ECM. When the ECM sends an ON signal (ground), the solenoid valve is bypassed to apply intake manifold vacuum to the swirl control valve actuator. This operation closes the swirl control valve. When the ECM sends an OFF signal, the vacuum signal is cut off and the swirl control valve opens.

P1131 SUBARU – Front Oxygen Sensor Circuit Malfunction Short Circuit

🚗 Subaru Code P1131: Diagnosis and Solutions

🔧 Common Symptoms:

  • 🚨 Check Engine Light On (or pre-warning).
  • ⚠️ Air-fuel mixture too rich or too lean.
  • 💥 Reduced engine performance (unstable idle, loss of power).

⚠️ Possible Causes of Subaru P1131:

  1. Faulty front oxygen sensor (lambda sensor).
  2. Electrical issues:
    • Damaged sensor wiring (open circuit, short circuit).
    • Oxidized connectors, broken/bent pins.
  3. Poor connection to the sensor circuit.
  4. Rare case: Faulty PCM (check after ruling out other causes).

🔧 How to Fix Code P1131?

Diagnostic Steps:

  1. Visually inspect the sensor and its wiring:
    • Look for burns, corrosion, or exposed wires.
    • Check connectors (clean if necessary).
  2. Test the oxygen sensor:
    • Measure voltage/resistance with a multimeter.
    • Compare with Subaru reference values.
  3. Check related codes (e.g., P0131, P0151) to identify linked faults.
  4. Replace the sensor if faulty (prefer genuine Subaru parts).

ℹ️ Meaning of Subaru Code P1131:

  • Generic description: “Malfunction/short circuit in the front oxygen sensor circuit (bank 1, sensor 1)”.
  • Important note:
    🔍 The exact description may vary by model and year. Consult a Subaru technical manual or professional diagnostic tool (e.g., SSM3/4).

📌 Key Points to Remember:

  • Do not replace the sensor without first checking the wiring!
  • Cleaning the connectors sometimes resolves the issue.
  • If the code reappears after repair, check the PCM (possible software update).

P1131 SUZUKI – Low Voltage/High Voltage Shift in HO2S11 Circuit

P1131 SUZUKI Possible Causes

  • Faulty Bank 1 Sensor 1 oxygen sensor
  • Bank 1 Sensor 1 oxygen sensor harness is open or shorted
  • Poor electrical connection in the Bank 1 Sensor 1 oxygen sensor circuit

How to Fix Code P1131 SUZUKI?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check Engine Light On (or Service Engine Soon Warning Light)

P1131 SUZUKI Meaning

HO2S11 Circuit Low Voltage/High Voltage Shift is the generic description for Suzuki code P1131, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Suzuki OBDII code P1131.

P1131 VOLKSWAGEN – HO2S21 Internal Resistance Too High

P1131 VOLKSWAGEN Possible Causes

  • Faulty oxygen sensor heater, bank 2 sensor 1 (HO2S21)
  • Oxygen sensor heater, bank 2 sensor 1 wiring harness open or short circuit
  • Oxygen sensor heater, bank 2 sensor 1 circuit, poor electrical connection

How to Fix P1131 VOLKSWAGEN Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1131 VOLKSWAGEN Meaning

HO2S21 Heater Resistance Too High is the generic description for Volkswagen P1131 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Volkswagen P1131 OBDII code.

P1132 – Lack of Heated Oxygen Sensor Upstream Switch Sensor Indicates Bank 1 Rich

P1132 Possible Causes

  • Faulty upstream oxygen sensor, bank 1
  • High or low fuel pressure
  • Dirty/faulty MAF sensor
  • Engine vacuum leak
  • Leaking fuel injector or fuel pressure regulator
  • Faulty powertrain control module (PCM)

How to Fix Code P1132?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1132 Meaning

The Heated Oxygen Sensor (HO2S) monitor is an on-board strategy designed to monitor the HO2S for any malfunction or deterioration that could affect emissions. Under specific conditions, the fuel control or upstream HO2S are checked for proper output voltage and response rate (the time it takes to switch from lean to rich or rich to lean). The downstream HO2S used for Catalyst Monitor are also monitored for proper output voltage. Input is required from engine coolant temperature (ECT) or cylinder head temperature (CHT), intake air temperature (IAT), mass air flow (MAF), throttle position (TP), and crankshaft position (CKP) to activate the HO2S monitor. The fuel system monitor and misfire detection monitor must also have completed successfully before the HO2S monitor is activated.
• The HO2S detects the oxygen content in the exhaust stream and delivers a voltage between zero and 1.0 volt. At stoichiometric lean (air/fuel ratio of about 14.7:1 for gasoline engines), the HO2S will generate a voltage between zero and 0.45 volt. At stoichiometric rich, the HO2S will generate a voltage between 0.45 and 1.0 volt.
• The HO2S monitor evaluates both the upstream (fuel control) and downstream (catalyst monitor) HO2S for proper operation.
• Once the HO2S monitor is activated, the upstream HO2S signal voltage amplitude and response frequency are checked. Excessive voltage is determined by comparing the HO2S signal voltage to a maximum threshold voltage that can be calibrated.
• A fixed frequency closed-loop fuel control routine is executed and the upstream HO2S voltage amplitude and output response frequency are observed. A sample of the upstream HO2S signal is evaluated to determine if the sensor is capable of switching or has a slow response rate.
• An HO2S heater circuit fault is determined by turning the heater on and off and looking for a corresponding change in the OSM and
measuring the current through the heater circuit.
• The MIL is activated after detecting a fault on two consecutive OBD II drive cycles.

P1132 FORD F150 – Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1

P1132 FORD F150 Possible Causes

  • Faulty upstream oxygen sensor, bank 1
  • High or low fuel pressure
  • Dirty/faulty MAF sensor
  • Engine vacuum leak
  • Leaking fuel injector or fuel pressure regulator
  • Faulty Powertrain Control Module (PCM)

How to Fix P1132 FORD F150 Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check Engine Light on (or Service Engine Soon warning light)

P1132 FORD F150 Meaning

The Heated Oxygen Sensor (HO2S) monitor is an on-board strategy designed to monitor the HO2S sensors for any malfunction or deterioration that could affect emissions. Under specific conditions, the fuel control or upstream HO2S sensors are checked for proper output voltage and response rate (the time it takes to switch from lean to rich or rich to lean). The downstream HO2S sensors used for Catalyst Monitor are also monitored for proper output voltage. An input is required from engine coolant temperature (ECT) or cylinder head temperature (CHT), intake air temperature (IAT), mass air flow (MAF), throttle position (TP), and crankshaft position (CKP) to activate the HO2S monitor. The fuel system monitor and misfire detection monitor must also have completed successfully before the HO2S monitor is activated.
• The HO2S sensor detects the oxygen content in the exhaust stream and delivers a voltage between zero and 1.0 volt. At stoichiometric lean (air/fuel ratio of about 14.7:1 for gasoline engines), the HO2S will generate a voltage between zero and 0.45 volt. At stoichiometric rich, the HO2S will generate a voltage between 0.45 and 1.0 volt.
• The HO2S monitor evaluates both the upstream (fuel control) and downstream (catalyst monitor) HO2S for proper operation.
• Once the HO2S monitor is activated, the upstream HO2S signal voltage amplitude and response frequency are checked. Excessive voltage is determined by comparing the HO2S signal voltage to a maximum threshold voltage that can be calibrated.
• A fixed frequency closed-loop fuel control routine is executed, and the upstream HO2S voltage amplitude and output response frequency are observed. A sample of the upstream HO2S signal is evaluated to determine if the sensor is capable of switching or has a slow response rate.
• An HO2S heater circuit fault is determined by turning the heater on and off and looking for a corresponding change in the OSM and
measuring the current through the heater circuit.
• The MIL is activated after a fault is detected on two consecutive OBD II drive cycles.

P1132 NISSAN SENTRA – Swirl Control Valve Circuit

P1132 2002 NISSAN SENTRA Possible Causes

  • Faulty swirl control valve
  • Swirl control valve harness is open or shorted
  • Poor electrical connection in the swirl control valve circuit

How to Fix Code P1132 2002 NISSAN SENTRA?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

An incorrect voltage signal is sent to the Engine Control Module (ECM).

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1132 2002 NISSAN SENTRA Meaning

The swirl control valve consists of an actuator and a valve. The valve is installed in the intake manifold and the actuator is connected to the rear end of the valve shaft.
The swirl control valve uses a stepper motor that has four winding phases. It operates according to the output pulse signal from the Engine Control Module (ECM). Two windings are turned on and off in sequence. Each time an ON pulse is issued, the valve opens or closes. When no change in control position is needed, the ECM does not output a pulse signal. A specific voltage signal is output so the valve remains at that particular opening.

P1132 AUDI – Heater O2S Circuit, Bank 1/2 Sensor 1, Short to B+

P1132 AUDI Possible Causes

  • Faulty O2 sensor
  • O2 sensor harness is open or shorted
  • Poor electrical connection in the O2 sensor circuit

How to Fix P1132 AUDI Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check Engine Light on (or soon-to-be-service engine warning light)

P1132 AUDI Meaning

A heated exhaust gas oxygen sensor (HO2S) indicating rich at the end of a test attempts to correct a too-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated duration.

P1132 BMW – O2 Sensor Heater Control Circuit, Bank 1 Sensor 1

 

P1132 BMW Possible Causes

  • Faulty O2 sensor, bank 1 sensor 1
  • O2 sensor, bank 1 Sensor 1 harness is open or shorted
  • Poor electrical connection in bank 1 sensor 1 O2 sensor circuit
 

How to Fix BMW P1132 Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

 
 

Possible Symptoms

  • Check Engine Light on (or service engine soon warning light)
 

P1132 BMW Meaning

A heated exhaust gas oxygen sensor (HO2S) indicating rich at the end of a test attempts to correct a too lean condition. The test fails when the fuel control system no longer detects switching for a calibrated duration.

P1132 BUICK – Low Variance of H02S Circuit, Bank 2 Sensor 1

P1132 BUICK Possible Causes

  • Faulty front oxygen sensor
  • Front oxygen sensor harness is open or short-circuited
  • Poor electrical connection in the front oxygen sensor circuit

How to Fix P1132 BUICK Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1132 BUICK Meaning

A heated exhaust oxygen sensor (HO2S) indicating rich at the end of a test attempts to correct a too lean condition. The test fails when the fuel control system no longer detects switching for a calibrated duration.