OBD
P053A
PCV Heater A Control Circuit /Open
What it means
P053A means PCV Heater A Control Circuit /Open.
Check these first
- A failed PCV heater element
- An open circuit in the heater wiring
- A corroded heater connector
- A blown fuse feeding the heater
- A failed driver in the PCM
What to do next
- Check the fuse that feeds the PCV heater
- Measure the heater element resistance
- Inspect the heater connector and wiring
- Test the control circuit at the PCM
- Replace the PCV heater if the element is open
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.