Powertrain
generic / SAE
P2543
Power Demand Signal Circuit
The ECU detects an electrical fault on the power demand input signal used to coordinate accessory loads (e.g. AC compressor, alternator load). The signal is missing or implausible.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 43
Possible causes
- Open signal wire high
- Fault in requesting module medium
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.3–1.5 h
- Component: power demand signal module
- Component: hvac module
- MIL / check engine light
Sources
References
sae:J2012