VOLVO
ECM-P050000 - Speed sensor A. General malfunction information. No information on malfunction type
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
1 modelXC90 (2003–)
Show models by year and engine (1)
What does this fault code mean?
The code concerns the speed sensor. The fault is registered in the brake control module (BCM), which sends the information to the engine control module (ECM) over the CAN network. The code does not specify the cause, but the fault lies in the speed signal from the brake system.
Possible causes
- The cause lies in the brake control module (BCM)
What you can do
- 1If you have a diagnostic tool, read the fault codes in the brake control module (BCM) and remedy them first
- 2If you have a diagnostic tool, read the vehicle speed as live data and compare it with the speedometer during a test drive
- 3Check that the fuses are intact. Their location is given in the owner's manual or on the fuse box cover
- 4The brake system is safety-critical: have a workshop check the brake control module, and do not work on the brakes yourself
- 5After the work, road test and check that the cruise control works, then clear the code
Symptoms you may notice2
- The cruise control does not work at all
- A message appears on the text display
What the fault can affect1
- The cruise control is switched off while the fault is active
General guidance for car owners. Diagnosis on the car can point to a different cause.