U0106high severityNetwork
Lost Communication with Glow Plug Control Module
on 2010 Audi Q7 3.0L TDI V6 · AWD
What this code means
Cannot communicate with the glow plug control module on diesel vehicles.
Symptoms
- Hard cold starting
- Glow plug light stays on
- Extended cranking
- White exhaust smoke on cold start
Common causes
- Glow plug module failure
- CAN bus wiring issue
- Fuse blown
- Module connector corrosion
- Glow plug module water damage
Diagnostic steps
- Check glow plug module fuse
- Test module power and ground
- Inspect module connector
- Check CAN bus wiring
- Test glow plug module directly
Repair notes
Check fuses and power supply. Glow plug modules often fail from heat exposure.
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00003
Control Module - Defective
01304
Radio - No Communication
01312
Powertrain Data Bus - Defective
01314
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01315
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01316
ABS Control Module - No Communication
01317
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01318
Immobilizer Control Module - No Communication
01321
Airbag Control Module - No Communication
U0001
High Speed CAN Communication Bus