Ignition Coil D Primary Control Circuit High

Check these first

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

What to do next

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

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