What it means
Right Front Wheel Speed Sensor B Incorrect Component Installed: the installed component does not match the type the vehicle expects. Wheel-speed signals feed ABS, ESC, traction control and the speedometer.
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 ABS module checks whether right front wheel speed sensor B is the type expected for that position and whether its signal is compatible. This code sets when the installed sensor or its connection does not match the required component, often after an incorrect replacement or installation.
Common causes
Most likely first.
- Incorrect replacement wheel speed sensor
- Wrong sensor type or electrical specification
- Sensor not fully seated or installed in the correct position
- Connector or wiring mismatch
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
How to diagnose it
- Save the ABS freeze-frame data and review live right front sensor B speed, noting whether the fault began after sensor work.
- Compare the installed right front B sensor's application and electrical type with the vehicle's required specification.
- Inspect the B connector and wiring for mismatched plugs, altered connections, or incompatible terminals.
- Check that sensor B is fully seated in the correct position and that its gap meets the manufacturer's specification.
- If the part and installation are correct, test the sensor B circuit and output using the manufacturer's procedure before suspecting the ABS module.
Common fixes
- Reseat the right front sensor B and secure its connector.
- Correct a connector or wiring mismatch with compatible terminals and routing.
- Replace an incorrect sensor with the specified right front B type.
- Correct sensor position or gap to the manufacturer's specification.
Can I keep driving?
Drive cautiously because ABS and stability or traction control may be unavailable, particularly on slippery roads or during sudden stops. Avoid relying on those systems until the correct sensor and installation are confirmed.
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.