What it means
The control module monitors the park brake switch for changes between its expected states. It sets this code when the switch signal remains in one state when a change is expected.
At a glance
- Usually lights the ABS or stability-control warning light
How it works
The park brake switch changes state as the park brake is applied and released. C060A sets when the control module expects a change but the switch signal stays in one state, pointing to a stuck switch, damaged contacts, or a shorted circuit.
Common causes
Most likely first.
- Park brake switch mechanically stuck
- Worn or damaged switch contacts
- Damaged wiring or shorted circuit
- Corroded or loose connector
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
How to diagnose it
- Record freeze-frame data and watch live park brake switch status while applying and releasing the park brake several times.
- Check whether the park brake dashboard indication changes with the actual applied and released positions.
- Inspect the switch for sticking or damage and check its connector for corrosion, looseness, or pushed-back pins.
- Inspect the switch harness for chafing or a short that could hold the signal in one state.
- Test switch continuity and circuit state changes according to the manufacturer's procedure before considering a module fault.
Common fixes
- Free a mechanically sticking switch if it can be safely restored, or replace it if damaged.
- Repair a shorted or damaged switch wire.
- Clean and secure corroded or loose connector terminals.
- Replace a switch with worn contacts that do not change state reliably.
Can I keep driving?
Check that the park brake releases fully and the brake warning indication is sensible before driving. If the brake remains applied or braking feels abnormal, do not continue; otherwise drive cautiously because stability functions may be limited.
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.