P06E4
Control Module Wake up Circuit Performance
Generic OBD-II
Common symptoms
What you'll notice
- Check the battery voltage and ensure it is within the proper range.
- Inspect and test the wiring and connections leading to the control module to ensure they are secure and free of any damage or corrosion.
- Verify that the control module is correctly seated and plugged in.
- Reset the control module by disconnecting the battery for a few minutes and then reconnecting it.
- If the issue persists, consider replacing the control module itself.
Common causes
Most likely first
- Faulty control module power supply
- Loose or corroded wiring or connectors in the control module wake up circuit
- Control module malfunction or software issue
- Battery or alternator related issues (low voltage or poor charging)
- Faulty ignition switch or ignition relay
How to diagnose & fix
Work through it in order
- Vehicle fails to start or struggles to start
- Vehicle intermittently loses power or stalls while driving
- Malfunction indicator light (MIL) illuminates on the dashboard
- Poor fuel efficiency or abnormal fuel consumption
- Difficulty or delay in shifting gears for automatic transmission vehicles
Read & clear P06E4 yourself
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