What it means
Multi-axis Acceleration Sensor Module B Range/Performance: the signal is implausible or outside the valid range.
How it works
Multi-axis acceleration sensor module B reports vehicle movement, such as lateral or longitudinal acceleration, to the stability-control system. The control module sets this range/performance code when module B's reported values are implausible or outside the expected operating range.
Common causes
Most likely first.
- Multi-axis acceleration sensor fault
- Sensor mounting or orientation problem
- Wiring or connector fault
Symptoms
- Stability-control warning light on
- Traction or stability control may be limited
How to diagnose it
- Read the stability-control freeze-frame data and check live module B acceleration values with the vehicle stationary for implausible readings.
- Compare module B's live readings during a gentle, safe drive with vehicle movement and other available stability-control data.
- Inspect module B's mounting and orientation for looseness, damage, or evidence it was installed incorrectly.
- Check the module B connector and harness for corrosion, loose terminals, pin damage, or chafing.
- Test module B power, ground, and signal circuits against the manufacturer's specification before condemning the sensor.
Common fixes
- Reconnect and secure the module B connector.
- Repair damaged wiring or poor terminal connections at module B.
- Correct module B mounting or orientation.
- Replace module B if its output remains out of range after circuit and installation checks.
Can I keep driving?
The vehicle may still brake and steer normally, but stability and traction control can be reduced or disabled. Drive smoothly and avoid conditions where those systems are especially useful until the fault is resolved.
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.