What are the common causes of C0512?

An open circuit in the right rear sensor wiring. A failed right rear wheel speed sensor. A damaged harness near the right rear wheel. Corrosion at the right rear sensor connector. A fault in the ABS module input.

Inspect the right rear sensor and connector. Test the sensor circuit for an open. Measure sensor resistance against spec. Replace the sensor or repair the harness. Clear the code and retest.

C0512

Right Rear Wheel Speed Sensor A Circuit/Open

System: Chassis control (C code)
Lamp: ABS Light
Category: Chassis

What it means

C0512 means Right Rear Wheel Speed Sensor A Circuit/Open.

Where it lives

For C0512, the sensor sits on the circuit this code reports. The description of C0512 reports the sensor as open.

Check these first

An open circuit in the right rear sensor wiring
A failed right rear wheel speed sensor
A damaged harness near the right rear wheel
Corrosion at the right rear sensor connector
A fault in the ABS module input

What to do next

Inspect the right rear sensor and connector
Test the sensor circuit for an open
Measure sensor resistance against spec
Replace the sensor or repair the harness
Clear the code and retest

Look up another code

Code or symptom

Enter a full code or a symptom. Press / to search. How to read a code

Type a code above, or start from a symptom or a common code.

Updated

Generic SAE J2012 definition. Last updated 2026-10-10.