What it means
The control module monitors the steering angle sensor module and sets this code when it detects a general fault with the module. The title does not specify a particular signal or circuit failure.
At a glance
- Usually lights the ABS or stability-control warning light
- The engine or gearbox may go into limp mode
How it works
The steering angle sensor module reports steering-wheel position to systems such as stability control, which compare the driver’s steering input with vehicle motion. The control module checks the module’s general operation and communication; C0526 sets when it detects a module fault without identifying a specific signal or circuit failure.
Common causes
Most likely first.
- Steering angle sensor module internal fault
- Module power or ground problem
- Damaged wiring or connector
- Communication fault with the module
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
How to diagnose it
- Read ABS and stability-control codes and freeze-frame data to identify related communication, voltage, or steering-angle faults.
- Check live steering-angle data while slowly turning the wheel and note whether the module reports a changing, plausible value or fails to communicate.
- Inspect the steering angle sensor module connector and visible wiring for damage, looseness, corrosion, or signs of recent steering-column work.
- Check the module’s power and ground against the manufacturer’s wiring information and specification.
- If its supply and wiring are sound, follow the manufacturer’s module communication and fault-isolation procedure to confirm an internal module fault.
Common fixes
- Reconnect or repair a loose or damaged steering angle sensor module connector.
- Repair the module’s power or ground wiring fault.
- Repair the network wiring or connection if it is interrupting module communication.
- Replace the steering angle sensor module if diagnostics confirm an internal fault, then perform any required setup.
Can I keep driving?
ABS or stability control may be disabled, and brake assist may be reduced, even if ordinary braking remains available. Drive cautiously and leave extra stopping distance; stop if steering or braking feels abnormal.
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.