OBD-II code · Network
U019C Lost Communication With Glow Plug Control Module 2
ECU lost communication with glow plug control module 2 (second module on engines with bank-individual glow control).
Is it safe to drive with U019C?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Glow Plug Module 2, Can Bus
Related codes
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- U019ELost Communication With Transmission Range Control Module
- U019FLost Communication With Engine Coolant Pump Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.