VOLVO
ECM-512D - Vehicle speed signal. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (8)
- Volvo C30 (2007–2013)2007–2011Engine B5244S4 only
- Volvo C70 (2006–2013)2006All engines except: B5254T3
- Volvo C70 (2006–2013)2007–2010Engine B5244S4, B5244S5 only
- Volvo C70 (2006–2013)2011Engine B5244S4 only
- Volvo S40 (2004–2013)2004Engine B5244S4, B5244S5 only
- Volvo S40 (2004–2013)2005–2010Engine B5244S4, B5244S5, B5244S7 only
- Volvo V50 (2004–2013)2004Engine B5244S4, B5244S5 only
- Volvo V50 (2004–2013)2005–2010Engine B5244S4, B5244S5, B5244S7 only
What does this fault code mean?
The brake control module (BCM) has registered a fault in the speed signal and sent a fault message to the engine control module, which stores the code. It is a follow-on, so troubleshooting is done in the brake control module, and cruise control does not work in the meantime.
Possible causes
- Fault in the brake control module (BCM) that should be troubleshot first
What you can do
- 1Read off the fault codes in the brake control module (BCM) first and remedy them
- 2Erase the code in the engine control module only once the fault in the brake control module is remedied and erased
- 3Since the fault concerns speed data from the brake control module, have a workshop check the braking system before you drive if the fault remains
Symptoms you may notice1
- Cruise control does not work at all
What the fault can affect2
- Cruise control is switched off
- With an automatic gearbox, the speed is taken from the gearbox instead
General guidance for car owners. Diagnosis on the car can point to a different cause.