The automobile fault code P122D indicates a problem with the Intake Air Flow Valve. When this fault occurs, the Engine Light or Service Engine Soon Warning Light will illuminate. The cause of this issue could be a faulty Intake Air Flow Valve, an open or shorted harness, or a poor electrical connection in the valve circuit.

To fix this problem, you should visually inspect the wiring harness and connectors for any damage. Look out for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0 hour.

It is important to address this fault code promptly to prevent further damage to your vehicle.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p122d fault code.

  • The symptoms of the automobile fault code P122D include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p122d can be caused by a faulty intake air flow valve, an open or shorted intake air flow valve harness, or a poor electrical connection in the intake air flow valve circuit.

  • The fault code P122D can be caused by: a faulty intake air flow valve, an open or shorted intake air flow valve harness, and a poor electrical connection in the intake air flow valve circuit.

To fix the automobile fault code p122d, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P122D, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p122d are the estimated repair time and the hourly rate charged by auto repair shops. The estimated repair time for this fault code is 1.0 hour.

Auto repair shops typically charge between $75 and $150 per hour for their services.

These factors will determine the overall cost of diagnosing and fixing the p122d fault code.

The P122D fault code refers to the Intake Air Flow Valve Position Sensor Exceeded Learning Limit.

This code is related to the intake airflow valve in diesel engines. The intake airflow valve is responsible for reducing the intake air flow rate in part-load operation, allowing for a higher exhaust gas recirculation rate.

It contains a contactless inductive throttle position sensing element that is managed by a customized integrated circuit.

The valve position sensor, which is mounted within the valve body assembly, provides a signal voltage that changes relative to the valve blade angle. This information is transmitted between the Intake Air Flow Valve and the Engine Control Module (ECM) on the signalserial data circuit. If the ECM detects that the Intake air flow valve learned closed position is not within the range of 4.25 – 4.70 V, the P122D fault code will be set.

This indicates that the valve position sensor has exceeded its learning limit.

It is important to address this fault code promptly to ensure proper functioning of the intake airflow valve and the overall performance of the engine.

What are the possible causes for the automobile fault code P122D?

If you see the engine light or service engine soon warning light on, the fault code P122D could be the culprit. This code is often caused by a faulty intake air flow valve, an open or shorted intake air flow valve harness, or a poor electrical connection in the intake air flow valve circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Don’t forget to check the possible causes listed above for a more comprehensive solution.

How can I visually inspect the wiring harness and connectors related to the intake air flow valve?

To visually inspect the wiring harness and connectors related to the intake air flow valve, start by checking for any damaged components. Look closely for any broken, bent, pushed out, or corroded pins on the connectors. These issues can cause a poor electrical connection or an open or shorted circuit. By thoroughly examining the wiring harness and connectors, you can identify any potential problems and take the necessary steps to fix them. Don’t forget to check the “Possible Causes” mentioned earlier to ensure a comprehensive inspection.

What should I look for when checking for damaged components or corroded connector pins to fix the fault code P122D?

When troubleshooting the fault code P122D, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. These issues can cause a poor electrical connection or an open or shorted circuit in the Intake Air Flow Valve. By checking for these problems, you can identify and fix the cause of the fault code.

p122d error fault code explained

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a faulty Intake Air Flow Valve or issues with the wiring harness and connectors.

To fix it, visually inspect the wiring harness and connectors for any damage, and check for broken or corroded pins.

Scroll to Top