OBD
P0352
Ignition Coil B Primary Control Circuit/Open
What it means
P0352 means Ignition Coil B Primary Control Circuit/Open.
Check these first
- Open or shorted coil B wiring
- Failed ignition coil
- Damaged connector pins
- Faulty PCM coil driver
What to do next
- Swap coil B with a known-good coil
- Measure the coil's primary resistance
- Verify the trigger signal and power feed at the coil
- Inspect the connector and harness for damage
- Replace the coil or repair the circuit
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Updated
Generic SAE J2012 definition. Last updated 2026-08-30.