VOLVO
ECM-3460 - Knock sensor (KS), test pulse. Internal fault
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS40 (2004–2013), V50 (2004–2013)
Show models by year and engine (2)
What does this fault code mean?
The engine control module filters the knock sensor signal internally, and here it has found a fault in the filter of the knock control circuit. The fault points to the control module itself rather than an external component.
Possible causes
- Damaged engine control module
What you can do
- 1Clear the code and start the engine to see whether it returns
- 2Check that the engine control module connectors are secure and free from oxidation
- 3Check the fuses for the engine control module
- 4If the fault remains, have a workshop check the control module with diagnostic equipment and replace it if needed
Symptoms you may notice2
- Deterioration in performance
- Malfunction indicator (emissions lamp) is lit
What the fault can affect1
- Ignition timing is retarded for safety reasons
General guidance for car owners. Diagnosis on the car can point to a different cause.