Powertrain
generic / SAE
P053A
PCV Heater A Control Circuit Open
The heater on PCV path A - used to prevent ice plugs in the crankcase ventilation hose during cold weather - has an open control circuit. Without it, condensation can freeze and block PCV flow, raising crankcase pressure dangerously.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 3A
Possible causes
- Open in harness or heater element high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 60–250 €
- Estimated time: 0.4–1.4 h
- Component: pcv heater a
- Component: pcv heater wiring a
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012