P024D Fault Code

P024D OBD-II Trouble Code Short Description

Charge Air Cooler Bypass Position Sensor A Circuit Range/Performance

What does trouble code P024D mean?

The P024D error code is related to the charge air cooler bypass position sensor in a car's turbocharged engine. It indicates that there is a problem with the sensor A circuit, and that the circuit is operating outside the expected range or performance.

This fault can be caused by a range of issues, including a failed sensor, damaged wiring, or a faulty control module. Symptoms of this error may include reduced engine power, decreased fuel efficiency, and overall poor engine performance.

To diagnose and repair this issue, a qualified mechanic will need to inspect the charge air cooler bypass system and related components, such as the sensor itself, wiring, and control module. Depending on the cause of the problem, a replacement sensor or other repairs may be necessary.

It is important to address this issue quickly to prevent further engine damage and ensure safe and efficient operation of the vehicle.


What are the symptoms of the P024D code?

Symptoms of P024D fault code on cars may include:

  1. Check Engine Light (CEL) or Malfunction Indicator Light (MIL) being illuminated.
  2. Loss of power when accelerating.
  3. Reduced fuel efficiency.
  4. Rough idling.
  5. Turbocharger not functioning properly.
  6. Rough running while driving.
  7. Engine stalling.


What causes the P024D code?

The P024D fault code appears when there is an issue with the Charge Air Cooler Bypass Position Sensor A Circuit. This sensor is responsible for detecting the position of the bypass valve in the charge air cooler system. The code indicates that there is a range/performance problem with the circuit associated with this sensor. A few possible causes for this fault code are:

  • Faulty Charge Air Cooler Bypass Position Sensor A
  • Wiring issues along the circuit
  • Issues with the charge air cooler system
  • Faulty engine control module (ECM)

To diagnose and fix the problem, it is recommended to take the vehicle to a certified mechanic who can run a full diagnostic scan and identify the root cause of the issue.

Possible Solutions

How to fix P024D?

Possible solutions for fixing P024D fault code are:

  1. Check and replace the charge air cooler bypass position sensor A if it is faulty or damaged.
  2. Inspect the wiring and connections in the circuit for any signs of damage, corrosion, or loose connections and repair as necessary.
  3. Check the vacuum lines connecting to the bypass valve and make sure they are not blocked or leaking.
  4. Perform a diagnostic test using an OBD scanner to determine if there are any other related fault codes and address them accordingly.
  5. Reset the fault code and test drive the vehicle to see if the issue has been resolved. If the fault code reappears, further diagnosis may be necessary.


  • What does P024D mean?

    P024D is an OBD-II diagnostic trouble code indicating a problem with the charge air cooler bypass position sensor circuit range/performance.

  • What is the charge air cooler (CAC) bypass?

    The CAC bypass is a system that diverts some of the air from the turbocharger away from the engine during periods of low load or idle to reduce the amount of energy the turbocharger must expend to move air into the engine.

  • What causes P024D?

    P024D may be caused by a malfunctioning charge air cooler bypass position sensor, wiring issues in the sensor circuit, or other problems with the bypass system.

  • What are the symptoms of P024D?

    Symptoms of P024D may include decreased engine performance and fuel economy, reduced turbocharger efficiency, and engine hesitation or stalling.

  • How is P024D diagnosed?

    P024D is diagnosed using an OBD-II scanner and other diagnostic tools to inspect the charge air cooler bypass position sensor and related circuits for damage or malfunction.

  • How is P024D treated?

    Treatment of P024D typically involves repairing or replacing any faulty components in the CAC bypass system, such as the position sensor or wiring.

  • Can I drive with a P024D code?

    Driving with a P024D code is not recommended as it can lead to decreased engine performance and other issues that could potentially cause damage to the vehicle.

  • How can I prevent P024D?

    Regular maintenance and inspection of the CAC bypass system can help prevent P024D. This includes checking for loose wiring, damaged components, and other potential issues that may affect the position sensor or other aspects of the system.