What does code C0511 mean?

Q: What does code C0511 mean?

Left Rear Wheel Speed Sensor A Correlation. C0511 indicates that the anti-lock brake system (ABS) module has detected a correlation error in the left rear wheel speed sensor 'A' signal, meaning the reported speed does not match expected values from other sensors or vehicle speed. The computer compares the left rear sensor's signal to the right rear and other wheel sensors and flags the code when the difference exceeds a calibrated threshold for a set time.

DTC codes / C05xx · Brakes, steering and suspension / C0511

C0511Left Rear Wheel Speed Sensor A Correlation

C0511 indicates that the anti-lock brake system (ABS) module has detected a correlation error in the left rear wheel speed sensor 'A' signal, meaning the reported speed does not match expected values from other sensors or vehicle speed. The computer compares the left rear sensor's signal to the right rear and other wheel sensors and flags the code when the difference exceeds a calibrated threshold for a set time.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.