Cylinder 9 Glow Plug Circuit Range or Performance
The glow plug on cylinder 9 is electrically intact yet does not heat to the calibrated temperature in the expected time - aged element, increased contact resistance, or a partially corroded ground.
Affected components
- Glow plug cyl 9
Common causes
- High likelihood: Plug element aged
Possible symptoms
- Glow plug warning light on (often orange coil symbol)
- Hard cold start or no start in cold weather
- White smoke from exhaust during warm-up
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.