Engine Error
U0140
Lost Communication With Body Control Module
Severity
Medium
Symptoms
Power windows/locks fail, radio dies, wipers won't work, erratic electrical behavior
Common Causes
- Water leak damaging BCM (often under windshield/dashboard)
- Blown BCM fuse
- Corroded ground wire
- Failed BCM
How to Fix
- 1 Find and fix water leaks
- 2 Replace BCM power fuse
- 3 Clean BCM grounds
- 4 Replace and program Body Control Module
Estimated Repair Cost
USD
$50
–
$800
Diagnostics/Leak repair: $100 - $300; BCM replacement: $300 - $800