OBD-II code · Powertrain (generic)
P06DF Glow Plug Control Module 1 Memory Checksum Error
Glow Plug Control Module 1 Memory Checksum Error: the control module has detected this fault condition. This affects diesel cold-start preheating.
Is it safe to drive with P06DF?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule memory corrupted
- Less likelyModule software outdated, reflash may resolve
- Less likelySupply voltage outside specification
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
- 1–3 h
- Emissions test
- Likely to fail
- Parts involved
- Glow Plug Control Module 1
Related codes
- P06FBGlow Plug Control Module 2 Memory Checksum Error
- P06DCEngine Oil Pressure Control Circuit High
- P06DDEngine Oil Pressure Control Circuit Performance Stuck Off
- P06DEEngine Oil Pressure Control Circuit Stuck On
- P06E0Cylinder 11 Glow Plug Control Circuit Low
- P06E1Cylinder 11 Glow Plug Control Circuit High
- P06E2Cylinder 12 Glow Plug Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.