P036F
Ignition H Control Signal Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check the ignition coil and wiring for any damage or loose connections.
- Inspect the ignition control module for any faults or malfunctions.
- Verify the ignition switch and ensure it is functioning properly.
- Check the ignition control module power supply for any issues.
- If all else fails, consider replacing the ignition control module.
Common causes
Most likely first
- Faulty ignition coil
- Malfunctioning ignition control module
- Issues with the ignition switch or key
- Problems with the ignition control module wiring harness
- Faulty engine control module
How to diagnose & fix
Work through it in order
- Engine misfires or stumbles
- Decreased engine performance or power
- Engine stalls or fails to start
- Increased fuel consumption
- Illuminated check engine light
Read & clear P036F yourself
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