P06DF

Symptoms

• Check Engine light on
• Glow plugs do not work correctly
• Difficult cold start
• Possible error codes for individual glow plug cylinders
• The pre-heating lamp does not go out or light up

Causes

• Damage to the flash memory of the spark plug control module due to voltage drop
• Exposure to electromagnetic interference
• Physical wear and tear of memory cells
• Moisture getting into the internal circuits of the module
• Poor quality power supply to the on-board network (voltage surges)

How to Fix

1. Check the supply voltage and quality of grounding of the glow plug control module
2. Make sure there are no voltage surges in the on-board network (check the battery and generator)
3. Try resetting the error - in rare cases, a one-time memory failure can be eliminated by resetting
4. If the error returns, replace the glow plug control module 1
5. Make sure that the new module is flashed with the correct firmware version
6. Check the operation of the glow plug system after replacement

Related codes

Error P06DF by Vehicle Brand