Fault Code U0243
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0243
Lost Communication With Trailer Brake Control Module
Code U0243 indicates a loss of communication with the Trailer Brake Control Module. This is crucial for safety when towing and may prevent proper operation of the trailer brakes.
Part Details
Part Name
Trailer Brake Control Module
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪700 - ₪1800
Engine Location
Under Dash/In Trunk
Symptoms
- Trailer brakes not working
- Trailer brake system warning light
- Error message on dashboard
- Inability to tow safely
Possible Causes
- 1Damaged wiring or loose connector
- 2Defective Trailer Brake Control Module
- 3Vehicle computer (ECM/PCM) issue
- 4CAN communication network interference
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