Powertrain
generic / SAE
P01EC
Engine Coolant Heater B Control Circuit/Open
Open circuit at engine coolant heater A (electric heater used for fast warm-up or hybrid coolant management).
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / EC
Possible causes
- Wiring break high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–3 h
- Component: coolant heater b
- Component: heater wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012