VOLVO
ECM-P024A71 - Charge Air Cooler Bypass Control A Range/Performance. Mechanical Failures. Actuator stuck
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (2007–), V70 (2008–)
Show models by year and engine (2)
What does this fault code mean?
The engine control module (ECM) monitors the bypass valve. The fault is set when the signal from the valve's position sensor does not match what the valve does when it is commanded.
Possible causes
- Bypass valve is sticking or jammed
- Damaged bypass valve
What you can do
- 1Read the code, clear it and road test to see whether it returns
- 2With a diagnostic tool, activate the bypass valve and compare the position sensor value in live data with how the valve moves
- 3Look at the bypass valve for dirt and damage that could make it jam
- 4Check that the fuses are intact. Fuse locations are shown in the owner's manual
- 5If the fault remains, have a workshop check the bypass valve and its position sensor with diagnostic equipment
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.