Is It Safe to Drive With a U0415 Code?
Common Symptoms of a U0415 Fault
U0415 Symptoms at a Glance
ABS warning light
ESC / traction control warning light
EML on
Multiple related system warnings
Possible Causes of U0415
A U0415 code can be triggered by faults across several systems. Identifying the exact root cause requires proper diagnostic equipment and live data — not just reading the code.
Common Causes of U0415
ABS Module Internal Fault
ABS module is malfunctioning and sending corrupted data.
CAN Bus Wiring Issue
Wiring fault causing data corruption on the ABS CAN bus messages.
Low Battery Voltage
Battery voltage causing ABS module to transmit corrupted data.
ABS Module Power Fault
Poor power or ground to ABS module causing data errors.
Why we don't list the exact part: A U0415 code tells you what's happening but not why. Replacing parts without diagnosis is the most common way drivers waste money. A proper diagnosis identifies the specific cause first.
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U0415 and Your MOT
A stored U0415 fault code will cause your car to fail its MOT. The engine management light will be illuminated during the test — an automatic failure. Get the fault diagnosed and repaired, then have the code cleared before booking your test.