VOLVO
ECM-P051207 - Starter Request Circuit. General Failure Information. Mechanical Failures
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?
During starting the ECM checks the engine speed. If the speed stays too low for a set time, depending on temperature, the module treats it as a fault and sets the code. The fault may come from a blocked engine, interference from nearby wiring, or a damaged pulse sensor.
Possible causes
- Engine blocked so that it cannot turn over
- Signal interference
- Damaged pulse sensor
What you can do
- 1Check the engine for visible objects that could block it so that the crankshaft cannot turn
- 2Check the pulse sensor connector for contact resistance and oxidation
- 3Check that the pulse sensor is correctly fitted
- 4Check that high-current wiring, such as the starter motor cable, is not routed too close to the pulse sensor or its wiring
- 5If you have a diagnostic tool, read the engine speed in live data while the engine is cranked and check that it rises
- 6If the fault returns, have a workshop with diagnostic equipment check the pulse sensor and the interference from the wiring
Symptoms you may notice1
- The engine does not start
General guidance for car owners. Diagnosis on the car can point to a different cause.