P036E
Ignition H Control Signal Circuit Low
Generic OBD-II
Common symptoms
What you'll notice
- Check the ignition coil for any damage or malfunctions.
- Inspect the ignition control module for any faults or failures.
- Test the ignition switch for proper operation and continuity.
- Verify the wiring and connections in the ignition system for any loose or damaged components.
- Consider replacing the engine control module (ECM) if all other potential causes have been ruled out.
Common causes
Most likely first
- Faulty ignition coil
- Loose or damaged ignition coil wiring
- Malfunctioning ignition control module
- Defective ignition switch
- Faulty ignition control relay
How to diagnose & fix
Work through it in order
- Engine misfire or hesitation
- Poor fuel economy
- Difficulty starting the engine
- Rough idle
- Illuminated check engine light
Read & clear P036E yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.