P06E3
Cylinder 12 Glow Plug Control Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check the wiring harness for any loose or damaged connections
- Inspect the glow plug relay for proper operation and replace if necessary
- Test the glow plugs for proper resistance and replace any faulty ones
- Check the cylinder 12 injector for any issues and replace if needed
- Perform a diagnostic scan to identify any other potential issues with the glow plug control circuit
Common causes
Most likely first
- Faulty glow plug control module
- Corroded or loose connections in the glow plug circuit
- Malfunctioning glow plugs
- Short circuit or open circuit in the glow plug wiring
- Issues with the engine control unit (ECU) affecting the glow plug control circuit
How to diagnose & fix
Work through it in order
- Difficulty starting the engine, especially in cold weather
- Rough or uneven engine performance
- Decreased fuel efficiency
- Illuminated check engine light
- Increased exhaust emissions
Read & clear P06E3 yourself
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