Powertrain
generic / SAE
P2505
ECM/PCM Power Input Signal
The ECM/PCM monitors the main switched battery feed (typically terminal 15 / ignition-switched supply via the main relay). A general fault is reported — either the input is missing entirely or it does not match the expected timing relative to ignition state. Engine may not start or stay running.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 05
Possible causes
- Failed main relay high
- Blown fuse on the ECM power feed medium
- Corroded connector pin at the ECM medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 60–600 €
- Estimated time: 0.5–2.5 h
- Component: main relay
- Component: power input wire
- Component: ecm
- MIL / check engine light
Sources
References
sae:J2012