Powertrain
generic / SAE
P2507
ECM/PCM Power Input Signal Low
The ECM/PCM switched-battery input reads below threshold while the ignition is on. Either the main relay does not close, the supply wire is broken or shorted to ground, or the battery is too low. Engine usually fails to start until the input recovers.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 07
Possible causes
- Main relay does not pull in high
- Open supply wire medium
- Severely discharged battery medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 60–500 €
- Estimated time: 0.4–2 h
- Component: main relay
- Component: power input wire
- Component: battery
- MIL / check engine light
Sources
References
sae:J2012