The B2278 code on your 2022 Jeep Grand Cherokee indicates a malfunction with the steering wheel position sensor. This code affects multiple vehicle systems including the electronic stability control, adaptive headlights, and lane keeping assist, as these systems rely on knowing steering wheel position.
Understanding B2278 on Jeep Grand Cherokee
The steering wheel position sensor (also called steering angle sensor) provides steering wheel angle data to various vehicle systems. It's typically integrated into the clockspring or steering column. Code B2278 indicates the sensor is providing incorrect or no data.
Common Symptoms
- Stability control warning light
- Traction control disabled
- Lane keeping assist not functioning
- Adaptive headlights not working properly
- Electric power steering issues
- May affect cruise control operation
Primary Causes
- Faulty steering angle sensor
- Clockspring failure (sensor often integrated)
- Sensor needs calibration after alignment
- Damaged wiring in steering column
- Module communication issue
- Battery disconnect affecting learned values
Diagnostic Procedure for 2022 Grand Cherokee
Using a Stellantis scan tool, access steering angle sensor data. The sensor should show 0° when steering is centered and track accurately as the wheel is turned. Check if sensor needs calibration - this is required after wheel alignment or battery disconnect. Inspect clockspring and column wiring. Verify CAN bus communication to steering column module.
Repair Solutions
Perform steering angle sensor calibration with scan tool - this often resolves B2278 after alignments or battery work. If calibration fails, check wiring and connectors. Replace faulty steering angle sensor or clockspring assembly if sensor is integrated. Clear codes after repair and verify proper angle readings during test drive with steering lock-to-lock movements.