C0525Multi-axis Acceleration Sensor Module B
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- General fault of module B, without stating whether range, calibration, signal stability or correlation is at fault. No manufacturer publishes C0525, and the location of module B is not documented. According to Bosch, one inertial unit can feed stability control as well as the airbag electronics, and an integrated version exists; the 2013 Buick Regal, for example, carries its multi-axis sensor in a module of its own at GM. FCA files a comparable internal failure as C006A-49 on Ram pickups and says that replacing the ABS or occupant restraint module is unnecessary if the code clears after a software update. Whether module B means a second IMU or a sensor in another controller therefore depends on the make.
- What you may notice
- ESC, airbag-related or assistance warning depending on host module
- Stability or assistance functions unavailable
- Likely causes
- PossibleSoftware fault, fixed by an update of the host module
- PossibleInternal electronic failure of module B
- RareSupply or ground fault at module B
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.