Ignition Coil H Primary Control Circuit High

Check these first

• An ignition coil H primary control wire shorted to voltage
• An open coil H primary control circuit
• A failed ignition coil H
• High resistance in the coil H primary circuit

What to do next

1. Check for spark at the cylinder fed by coil H
2. Test the coil H primary control wire for a short to voltage
3. Check the coil H primary circuit for an open
4. Measure ignition coil H primary resistance
5. Replace ignition coil H if the circuit tests good
6. Clear the code and retest

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