C0524 code meaning
Multi-axis Acceleration Sensor Module B Correlation
What C0524 means
Module B's readings disagree with another source for the same motion, most likely module A or values computed from steering angle and wheel speeds. No manufacturer publishes C0524; Audi documents only the A counterpart. A Bosch patent places two sensor devices on opposite sides of the car and treats yaw rate as measured twice, directly and via the centrifugal accelerations at each spot, so a control unit can spot a device giving falsified data. A Hyundai/Kia design moves the yaw and g sensors into the airbag unit and sends them over CAN to the stability controller, a layout where the airbag and brake systems can each hold a set. Which side is wrong is left to further testing.
C0524 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of C0524
- ESC or assistance warning message
- Stability or assistance functions limited
Common causes of C0524
- PossibleModule A or B rotated on its mount after repair or impact
- PossibleDrifting sensor in one of the two modules
- PossibleSoftware or timing fault in the comparing controller
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Multi axis accel module b
What each part of C0524 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 24 | The exact fault in that area. |
What to do next
- Note C0524 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0524
What does C0524 mean?
C0524 means "Multi-axis Acceleration Sensor Module B Correlation". Module B's readings disagree with another source for the same motion, most likely module A or values computed from steering angle and wheel speeds. It is a generic code, so it means the same on every make.
Is it safe to drive with C0524?
Drive gently and only to a workshop. With C0524 the car can go into limp mode (reduced power) to protect itself.
Will C0524 fail an emissions test?
C0524 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0524 to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will C0524 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.