Severity: 🟠 High — diagnose within 1–2 days
ECU has lost CAN bus contact with the ABS module.
ABS module power and CAN bus checks, ABS module diagnosis.
What does U0121 mean?
U0121 (Lost Communication with ABS Control Module) means ECU has lost CAN bus contact with the ABS module. Common symptoms include abs light, esp/traction control off, multiple chassis warnings.
How much does U0121 repair cost in Hyderabad?
At GarageNation Hyderabad, we diagnose U0121 with dealer-grade scan tools and provide a fixed quote before any work begins. Call +91 8106316369 for an estimate.
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