VOLVO
ECM-2507 - ECM / PCM Power Input Signal Low
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 (5)
- Volvo C30 (2007–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo C70 (2006–2013)2008Engine D4204T only
- Volvo C70 (2006–2013)2009–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo S40 (2004–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo V50 (2004–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
What does this fault code mean?
The ECM checks the voltage on the system relay coil, which gets its supply through a fuse in the engine bay fuse box and is earthed inside the control unit. If that voltage is too low, the code is stored.
Possible causes
- Contact resistance or oxidation at the connections
- Cable short-circuited to ground
- Damaged system relay
- Damaged engine control module (ECM)
What you can do
- 1Check that the fuse feeding the system relay is intact
- 2Look at the connections at the relay and the control module for oxidation and loose contacts
- 3Use a multimeter to check that the cable to the relay coil is not short-circuited to ground, meaning the car body
- 4If the fuse, connectors and cables are intact, have a workshop with diagnostic equipment check the system relay and the control module
Symptoms you may notice3
- The engine does not start
- The starter motor does not turn over
- No clicking sound when starting is attempted
General guidance for car owners. Diagnosis on the car can point to a different cause.