VOLVO
ECM-5320 - Vehicle speed signal (VSS). 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 (9)
- Volvo C30 (2007–2013)2007Engine B5254T3 only
- Volvo C30 (2007–2013)2008–2013Engine B5254T7 only
- Volvo C70 (2006–2013)2006–2007Engine B5254T3 only
- Volvo C70 (2006–2013)2008–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2006–2007Engine B5254T3 only
- Volvo S40 (2004–2013)2008Engine B5254T3, B5254T7 only
- Volvo S40 (2004–2013)2009–2012Engine B5254T7 only
- Volvo V50 (2004–2013)2006–2007Engine B5254T3 only
- Volvo V50 (2004–2013)2008–2012Engine B5254T7 only
What does this fault code mean?
The engine control module (ECM) compares the vehicle speed reported by the brake control module (BCM) with engine speed when fuel supply is cut, for example during engine braking. If the speed appears too low for a longer time, the code is set and the speedometer may show a wrong value.
Possible causes
- Wrong vehicle speed reading from the brake control module (BCM)
- Dirt on the wheel speed sensors, which makes the speed signal too low
What you can do
- 1Check that the wheel sensors are clean and that no debris is stuck to them, since dirt can make the speed signal too low
- 2Read and fix the codes in the brake control module (BCM) first, since the speed signal comes from there
- 3If you have a diagnostic tool, compare the speed value in live data with the speedometer during a test drive and see whether it follows the car's speed
- 4The brake control module (BCM) is part of the braking system: do not work on it or its wiring yourself. Have a workshop check it if the fault remains
- 5Clear the code only once the cause is fixed, then road test to see whether it returns
Symptoms you may notice2
- The environment lamp lights up
- The speedometer shows a wrong value
What the fault can affect2
- On cars with a manual gearbox, the speed signal is set to a default value
- On cars with an automatic gearbox, a secondary speed signal from the transmission control module (TCM) is used instead
General guidance for car owners. Diagnosis on the car can point to a different cause.