OBD-II code · Powertrain (generic)
P06C5 Cylinder 1 Glow Plug Incorrect
The glow plug on cylinder 1 reports an electrical resistance or response curve that does not match the calibrated plug type. Typical after fitting a wrong replacement plug.
Is it safe to drive with P06C5?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyReplacement plug of wrong type
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
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Likely to fail
- Parts involved
- Glow Plug Cyl 1
Related codes
- P06C6Cylinder 2 Glow Plug Incorrect
- P06C7Cylinder 3 Glow Plug Incorrect
- P06C8Cylinder 4 Glow Plug Incorrect
- P06C9Cylinder 5 Glow Plug Incorrect
- P06CACylinder 6 Glow Plug Incorrect
- P06CBCylinder 7 Glow Plug Incorrect
- P06CCCylinder 8 Glow Plug Incorrect
- P06CDCylinder 9 Glow Plug Incorrect
- P06CECylinder 10 Glow Plug Incorrect
- P06CFCylinder 11 Glow Plug Incorrect
- P06D0Cylinder 12 Glow Plug Incorrect
- P06C2Cylinder 10 Glow Plug Circuit Range or Performance
- P06C3Cylinder 11 Glow Plug Circuit Range or Performance
- P06C4Cylinder 12 Glow Plug Circuit Range or Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.