P038A
Ignition I Control Signal Circuit/Open
Generic OBD-II
Common symptoms
What you'll notice
- Check for any loose or damaged wiring connections related to the ignition control signal circuit
- Inspect the ignition control module for any signs of damage or malfunction
- replace if necessary
- Verify the operation of the ignition control signal circuit using a diagnostic tool
- Clean and tighten the ignition coil connections
- Replace the ignition control module if all other solutions do not resolve the issue.
Common causes
Most likely first
- Faulty ignition coil
- Broken or damaged wiring in the ignition control signal circuit
- Faulty ignition control module
- Faulty ignition switch
- Malfunctioning engine control unit
How to diagnose & fix
Work through it in order
- Engine misfires or runs rough
- Decreased engine performance
- Difficulty starting the vehicle
- Engine stalling or shutting off unexpectedly
- Increased fuel consumption
Read & clear P038A yourself
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