OBD
P0358
Ignition Coil H Primary Control Circuit/Open
What it means
P0358 means Ignition Coil H Primary Control Circuit/Open.
Check these first
- A failed ignition coil H
- An open in the coil H primary circuit
- Worn coil H windings
- A damaged coil H connector or harness
- A faulty ECM driver
What to do next
- Monitor the ignition coil H control on a scan tool
- Check the coil H primary circuit for an open
- Inspect the coil H connector and harness
- Test the coil H resistance
- Replace the ignition coil H if it is failed
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.