Network
generic / SAE
U0273
Lost Communication With Lighting Driver Control Module A
The vehicle bus reports loss of communication with lighting driver control module A. LED matrix segments and adaptive headlamp functions driven by this node may default to a fallback beam pattern.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 73
Possible causes
- Bus wiring open or shorted high
- Module without power or ground medium
- Module failed medium
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
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
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References
sae:J2012