C0527 code meaning
Steering Angle Sensor Module Mechanical
What C0527 means
C0527 marks a mechanical rather than electrical fault of the steering angle sensor module. No manufacturer documents this code publicly. Many sensors are gear-driven: Bosch and Saab describe a hub gear on the steering shaft turning two measuring gears with different tooth counts (28 and 26 on the Saab 9-5), whose magnet positions encode the absolute angle. Broken teeth, a cracked housing, a worn drive dog or a sensor clipped in out of position make the reported angle stop following the wheel although supply and bus are fine. Bourns' contactless type checks its own angular speed and reports an error beyond 1016°/s, which a jumping gear would cause. Stability control is usually switched off; the cure is a new sensor and re-centring.
C0527 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairAfter a drive cycle
Symptoms of C0527
- ESC warning lamp on
- Angle on the scan tool jumps or stops changing while steering
- Possible noise from the steering column
Common causes of C0527
- Most likelyWorn or broken measuring gears inside the sensor
- PossibleSensor drive dog or mounting loose on the steering shaft
- PossibleSensor installed out of position after column or clock spring work
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Steering angle sensor module
What each part of C0527 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 27 | The exact fault in that area. |
What to do next
- Note C0527 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 C0527
What does C0527 mean?
C0527 means "Steering Angle Sensor Module Mechanical". C0527 marks a mechanical rather than electrical fault of the steering angle sensor module. It is a generic code, so it means the same on every make.
Is it safe to drive with C0527?
Drive gently and only to a workshop. With C0527 the car can go into limp mode (reduced power) to protect itself.
Will C0527 fail an emissions test?
C0527 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 C0527 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will C0527 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.