P1227 CHEVROLET – Fuel Injector 2 Control Circuit Shorted

P1227 CHEVROLET Possible Causes

  • Faulty fuel injector 2
  • Fuel injector 2 harness is open or shorted
  • Poor electrical connection in fuel injector 2 circuit
  • Faulty Engine Control Module (ECM)

How to Fix Code P1227 CHEVROLET?

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

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

P1227 CHEVROLET Meaning

The Engine Control Module (ECM) provides voltage to each fuel injector on the positive voltage injector control circuits. The ECM powers each fuel injector by grounding that fuel injector’s control circuit. The ECM monitors the status of the positive voltage injector control circuits and the fuel injector control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injectors will be disabled and may disable the related fuel injector group. The Diagnostic Trouble Code (DTC) will be set when the ECM injector output driver detects incorrect current on a fuel injector circuit.

P1227 FORD – Wastegate Failed Closed Under Pressure

P1227 FORD Possible Causes

  • Faulty EGR valve
  • Faulty MAF sensor
  • Faulty SIP sensor
  • Compressor bypass actuator stuck in closed position
  • Faulty compressor

How to Fix P1227 FORD 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.

Technical Notes

Indicates that the boost pressure is continuously higher than desired

Possible Symptoms

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

P1227 FORD Meaning

Wastegate failed closed on pressure is the generic description for Ford code P1227, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the Ford P1227 OBDII code.

P1227 GMC – Fuel Injector 2 Control Circuit Shorted

P1227 GMC Possible Causes

  • Faulty fuel injector 2
  • Fuel injector 2 harness is open or shorted
  • Poor electrical connection in fuel injector 2 circuit
  • Faulty Engine Control Module (ECM)
 

How to Fix GMC Code P1227?

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

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

P1227 GMC Meaning

The Engine Control Module (ECM) provides voltage to each fuel injector on the positive voltage injector control circuits. The ECM powers each fuel injector by grounding that fuel injector’s control circuit. The ECM monitors the status of the positive voltage injector control circuits and the fuel injector control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injectors will be disabled and may disable the relevant fuel injector group. The Diagnostic Trouble Code (DTC) will be set when the ECM injector output driver detects incorrect current on a fuel injector circuit.

P1227 INFINITI – Low Input of Accelerator Pedal Position Sensor 2 Circuit

P1227 INFINITI Possible Causes

  • Faulty Accelerator Pedal Position (APP) Sensor
  • Accelerator Pedal Position (APP) Sensor harness is open or shorted
  • Poor electrical connection in Accelerator Pedal Position (APP) Sensor circuit
 

How to Fix Code P1227 INFINITI?

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 excessively low voltage from the Accelerator Pedal Position (APP) Sensor 2 is sent to the Engine Control Module (ECM).

Possible Symptoms

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

P1227 INFINITI Meaning

The Accelerator Pedal Position (APP) Sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator pedal position and sends a signal to the Engine Control Module (ECM).
The Accelerator Pedal Position Sensor has two sensors. These sensors are a type of potentiometer that convert the accelerator pedal position into an output voltage and send the voltage signal to the ECM.
Additionally, these sensors detect the opening and closing speed of the accelerator pedal and transmit the voltage signals to the ECM. The ECM determines the current accelerator pedal opening angle from these signals and controls the throttle control motor based on these signals.
The idle position of the accelerator pedal is determined by the ECM receiving the signal from the Accelerator Pedal Position Sensor. The ECM uses this signal for engine operation, such as fuel cut-off.

P1227 NISSAN – Low Input of Accelerator Pedal Position Sensor 2 Circuit

P1227 NISSAN Possible Causes

  • Faulty Accelerator Pedal Position (APP) Sensor
  • Accelerator Pedal Position (APP) Sensor Harness is Open or Shorted
  • Poor Electrical Connection in Accelerator Pedal Position (APP) Sensor Circuit

How to Fix Code P1227 NISSAN?

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?

An excessively low voltage from the Accelerator Pedal Position (APP) Sensor 2 is sent to the Engine Control Module (ECM).

Possible Symptoms

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

P1227 NISSAN Meaning

The Accelerator Pedal Position (APP) Sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator pedal position and sends a signal to the Engine Control Module (ECM).
The Accelerator Pedal Position Sensor has two sensors. These sensors are a type of potentiometer that convert the accelerator pedal position into an output voltage and emit the voltage signal to the ECM.
Additionally, these sensors detect the opening and closing speed of the accelerator pedal and transmit the voltage signals to the ECM. The ECM evaluates the current accelerator pedal opening angle from these signals and controls the throttle control motor based on these signals.
The idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for engine operation, such as fuel cut-off.

P1227 VOLKSWAGEN – Cylinder 3 Injector Circuit Short to Ground

P1227 VOLKSWAGEN Possible Causes

  • Faulty fuel injector 3
  • Fuel injector 3 harness is open or shorted
  • Poor electrical connection in fuel injector 3 circuit
 

How to Fix P1227 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.

Technical Notes

If the code is combined with other fuel injector codes (P1225, P1226, P1228, P1229, P1230), the problem may be the fuel pump relay.

 
 

Possible Symptoms

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

P1227 VOLKSWAGEN Meaning

Cylinder 3 Injector Circuit Short to Ground is the generic description for Volkswagen P1227 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Volkswagen OBDII P1227 code.

P1228 – Wastegate could not open under pressure

P1228 Possible Causes

  • Faulty EGR valve
  • Faulty MAF sensor
  • Faulty SIP sensor
  • Compressor bypass actuator stuck in closed position
  • Faulty compressor

How to Fix Code P1228?

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.

Technical Notes

Indicates that the boost pressure is continuously lower than desired

Possible Symptoms

  • Engine light on (or engine warning light soon to be on)

P1228 Meaning

Wastegate could not open under pressure is the generic description for code P1228, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about OBDII code P1228.

P1228 AUDI – Cylinder 4 Injector Circuit Short to Ground

P1228 AUDI Possible Causes

  • Faulty fuel injector
  • Fuel injector harness is open or shorted
  • Poor electrical connection in fuel injector circuit
 

How to Fix P1228 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.

Technical Notes

If the code is combined with other fuel injector codes (P1225, P1226, P1227, P1229, P1230), the issue might be the fuel pump relay.

 
 

Possible Symptoms

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

P1228 AUDI Meaning

Cylinder 4 Injector Circuit Shorted to Ground is the generic description for Audi P1228 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Audi P1228 OBDII code.

P1151 Lincoln – Upstream Heated Oxygen Sensor Switch Sensor Indicates Cylinder Bank 2 Lean

P1151 Lincoln Possible Causes

  • Upstream oxygen sensor fault, Bank 2
  • Fuel pressure too high or too low
  • Air flow sensor dirty/faulty
  • Engine vacuum leak
  • Fuel injector or fuel pressure regulator leak
  • Powertrain control module fault

How to Fix Lincoln P1151 Trouble Code?

First check the above »Possible Causes«. Visually inspect related wiring harnesses and connectors for damaged components and check connector pins for breaks, bends, push-outs, or corrosion.

Technical Explanation

This trouble code indicates that the powertrain control module has detected a system mixture that is too lean, meaning there is insufficient fuel or excessive air in the system. It is recommended to prioritize checking for vacuum leaks.

Trouble Code Triggering Conditions

When the heated oxygen sensor detects a lean mixture condition at the end of the test, the system attempts to correct the lean condition. This trouble code is set when the fuel control system does not detect signal switching within the calibrated time.

Possible Symptoms

  • Engine warning light illuminated

P1151 Lincoln Meaning Analysis

Heated oxygen sensor monitoring is an onboard diagnostic system monitoring strategy designed to detect HO2S sensor faults or performance degradation that may affect emissions. Under specific conditions, the system checks the output voltage and response rate of the upstream HO2S sensor for fuel control. Simultaneously monitors the downstream HO2S sensor output voltage for catalyst monitoring. Initiating HO2S monitoring requires parameters such as engine coolant temperature, intake air temperature, air flow, throttle position, and crankshaft position. Fuel system monitoring and misfire monitoring must be successfully completed before HO2S monitoring can begin.
• HO2S sensor detects oxygen content in exhaust, outputting 0-1.0 volt signal. Under stoichiometric air-fuel ratio conditions, HO2S generates 0-0.45 volt; under rich mixture conditions, output voltage is 0.45-1.0 volt
• HO2S monitoring evaluates both upstream and downstream sensor operation status
• After monitoring initiation, system checks upstream HO2S signal voltage amplitude and response frequency, comparing against threshold voltage to determine if standards are exceeded
• Executes fixed frequency closed-loop fuel control program, observes upstream HO2S voltage amplitude and output response frequency, evaluates sensor switching capability and response rate through signal sampling
• Determines heating circuit faults by cycling heating circuit on/off while monitoring corresponding changes, combined with measuring heating circuit current values
• Malfunction indicator light illuminates after fault is detected in two consecutive OBD II drive cycles

P1169 1996 Honda Civic – Sensor 1 for High Air-Fuel Ratio

P1169 1996 HONDA CIVIC Possible Causes

  • Faulty Air-Fuel Ratio Sensor 1
  • Air-Fuel Ratio Sensor 1 harness is open or shorted
  • Poor electrical connection in Air-Fuel Ratio Sensor 1 circuit

How to Fix Error Code P1169 1996 HONDA CIVIC?

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

  • Engine Light ON (or Service Engine Soon Warning Light)

P1169 1996 HONDA CIVIC Meaning

The Air-Fuel Ratio Sensor (A/F) 1 is installed in the exhaust system and detects the oxygen concentration in the exhaust gases. The A/F sensor sends the output voltage to the Engine Control Module (ECM). A heater for the sensor element is built into the A/F sensor (Sensor 1). It is activated and heats the sensor to stabilize and speed up the detection of oxygen concentration by controlling the current flowing through the heater. The current increase stabilizes when the voltage applied to the element electrode reaches a certain range because the amount of oxygen flowing through the diffusion layer is limited. The current is proportional to the oxygen concentration in the exhaust gases, so the air-fuel ratio is detected by measuring the current. The ECM compares a preset target air-fuel ratio with the detected air-fuel ratio and controls the fuel injection.
When the A/F sensor (Sensor 1) voltage is low, the air-fuel ratio is lean and the ECM uses A/F feedback control to output rich control. When the A/F sensor (Sensor 1) voltage is high, the air-fuel ratio is rich and the ECM uses A/F feedback control to output lean control.