VOLVO
ECM-P050116 - Vehicle Speed Sensor A Range/Performance. General Electrical Failures. Circuit voltage below threshold
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS60 (2011–), S80 (2007–), V70 (2008–)
Show models by year and engine (9)
- Volvo S60 (2011–)2011–2012Engine B5254T5 only
- Volvo S80 (2007–)2007–2008Engine B5254T6 only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8 only
- Volvo S80 (2007–)2010–2011Engine B5254T10, B5254T11, B5254T8 only
- Volvo S80 (2007–)2012Engine B5254T10 only
- Volvo V70 (2008–)2008Engine B5254T6 only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8 only
- Volvo V70 (2008–)2010–2011Engine B5254T10, B5254T11 only
- Volvo V70 (2008–)2012Engine B5254T10 only
What does this fault code mean?
The code concerns the speed sensor where the voltage is too low. The ECM compares the brake module speed signal (BCM), which is the main signal, with the reference signal from the transmission control module (TCM). The code is set when the two values differ too much with the engine running.
Possible causes
- Faulty transmission module speed signal (TCM)
What you can do
- 1If you have a diagnostic tool, read the fault codes in the transmission control module and remedy them first
- 2If you have a diagnostic tool, compare the speed from the brake control module and the transmission control module as live data with the engine running
- 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: if the values differ and the brake control module is suspected, have a workshop check it
- 5Clear the fault code once the fault has been remedied, and road test
Symptoms you may notice2
- The malfunction indicator lamp (MIL) lights up
- Uneven idling
General guidance for car owners. Diagnosis on the car can point to a different cause.