VOLVO
ECM-P085100 - Park / Neutral Switch Input Circuit Low. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (8)
- Volvo S60 (2011–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, D4204T5 only
- Volvo S80 (2007–)2014–2015Engine B4204T11, B4204T12, B4204T15, D4204T5 only
- Volvo V40 (2013–)2015Engine B4204T11, D4204T14 only
- Volvo V40 Cross Country (2013–)2015Engine B4204T11, D4204T14 only
- Volvo V60 (2011–)2014–2015Engine B4204T11, B4204T12, B4204T15, B4204T9, D4204T5 only
- Volvo V70 (2008–)2014–2015Engine B4204T11, D4204T5 only
- Volvo XC60 (2009–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, D4204T5 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11, D4204T5 only
What does this fault code mean?
The code means that the direct wire from the gear selector says starting is allowed, while the CAN signal from the transmission control module (TCM) says the opposite. The engine control module (ECM) uses the selector positions to decide whether engine start is allowed, and the fault is checked with the ignition on.
Possible causes
- The root cause is in the transmission control module (TCM)
What you can do
- 1Begin in the transmission control module (TCM) by reading off and remedying its fault codes
- 2Erase this code last, once the root cause in the TCM has been remedied and its fault code erased
- 3Check that the fuses are intact. The locations are shown in the instruction manual or on the fuse list
- 4Use a multimeter to check that the wire from the gear selector has no break and no contact with earth or voltage
- 5If the fault remains after these checks, have a workshop investigate the transmission control module (TCM)
Symptoms you may notice2
- The engine is hard to start and cranks slowly, either always or on some occasions
- The engine does not start, either always or on some occasions
What the fault can affect1
- The ECM uses the signal received over CAN instead
General guidance for car owners. Diagnosis on the car can point to a different cause.