OBD-II code · Powertrain (generic)
P06FD Glow Plug Control Module 2 to PCM Communication Range or Performance
Same as P0684 on module 2.
Is it safe to drive with P06FD?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyProtocol mismatch
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Glow Plug Control Module 2
Related codes
- P0684Glow Plug Control Module 1 to PCM Communication Range or Performance
- P06FAGlow Plug Control Module 2 Performance
- P06FBGlow Plug Control Module 2 Memory Checksum Error
- P06FCGlow Plug Control Module 2 to PCM Communication Circuit
- P06FECold Start Diesel Intake Air Flow Control Performance
- P06FFEconomy Mode Lamp Control Circuit
- P0700Transmission Control System Malfunction
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.