What it means
The module detects a right-rear wheel-speed sensor signal outside the expected range or inconsistent with vehicle conditions. The code identifies a signal problem but does not specify its cause.
At a glance
- Usually lights the ABS or stability-control warning light
- The engine or gearbox may go into limp mode
How it works
The right-rear wheel-speed sensor reports rotation to the ABS module, which checks whether its signal stays within a plausible range for vehicle speed and wheel motion. C0513 sets when that signal is implausible or inconsistent, potentially due to sensor fit, wiring, or the right-rear encoder.
Common causes
Most likely first.
- Damaged sensor wiring or connector
- Faulty wheel-speed sensor
- Damaged tone ring or encoder
- Loose sensor mounting
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
How to diagnose it
- Review freeze-frame data and graph the right-rear speed alongside the other wheels to identify when and how it becomes implausible.
- Inspect the right-rear sensor connector and harness for looseness, corrosion, chafing, or damage.
- Check that the right-rear sensor is seated securely and that its mounting is not loose or obstructed.
- Inspect the right-rear tone ring or encoder for damage, debris, or irregularity as the wheel rotates.
- Test the sensor output and circuit, and check for wheel or bearing movement that could change the sensor gap, following manufacturer specifications.
Common fixes
- Secure the right-rear sensor correctly and remove debris interfering with its seating.
- Clean or repair the right-rear sensor connector and wiring.
- Replace a faulty right-rear wheel-speed sensor.
- Repair or replace a damaged right-rear tone ring or encoder.
Can I keep driving?
ABS and stability functions may be limited, and speed-related readings may be unreliable. Drive cautiously, avoid slippery roads and hard braking, and arrange repair soon.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.