P036B
Ignition G Control Signal Circuit Low
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace the ignition coil
- Inspect and repair any wiring issues in the ignition control circuit
- Verify and repair any faults with the ignition control module
- Check and replace the ignition switch if necessary
- Perform a thorough diagnostic check on the engine control unit (ECU) to identify any software or hardware malfunctions
Common causes
Most likely first
- Faulty ignition coil
- Malfunctioning ignition control module
- Loose or damaged wiring in the ignition system
- Defective ignition switch
- Faulty engine control unit (ECU)
How to diagnose & fix
Work through it in order
- Engine misfire or hesitation
- Difficulty starting the vehicle
- Poor fuel efficiency
- Illumination of the check engine light
- Engine stalling or dying while driving
Read & clear P036B yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.