What it means
This code has no standardized generic meaning in the SAE/ISO list. Its meaning, if used by your vehicle, depends on the manufacturer.
How it works
The title identifies brake pressure sensor C, but C0571 does not have a standardized generic definition that confirms what the module detected. The meaning and the reason the code was stored depend on the vehicle’s manufacturer and brake-system design.
Common causes
Most likely first.
- Manufacturer-specific code definition
- Vehicle-specific diagnostic data needed
Symptoms
- Symptoms depend on the vehicle-specific fault
How to diagnose it
- Use a scan tool that can identify the vehicle’s brake module and read its full description for C0571 before testing parts.
- Check the vehicle-specific diagnostic information to confirm whether sensor C is present and what circuit condition the code represents.
- Inspect the identified sensor C connector and harness for visible damage, corrosion, or loose connections.
- Use the manufacturer’s diagnostic procedure to test sensor C and its specified circuits; do not infer a low-circuit test from the code number alone.
Common fixes
- Repair connector or wiring damage only if vehicle-specific testing identifies it.
- Restore the sensor C circuit or connection identified by the manufacturer’s diagnostic procedure.
- Replace a component only after vehicle-specific testing confirms it is faulty.
Can I keep driving?
The code’s effect on braking cannot be determined from the generic code alone. Check the vehicle-specific brake-module description promptly, and avoid driving if a brake warning appears 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.