Powertrain
generic / SAE
P01EA
Engine Coolant Heater A Control Circuit High
Engine Coolant Heater A Control Circuit High: the control-circuit voltage is above the expected range. Often an open circuit or a short to supply voltage.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / EA
Possible causes
- Wiring shorted to battery high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–3 h
- Component: coolant heater a
- Component: heater wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012