C0572 indicates that the brake pressure sensor C circuit is reporting a voltage that is higher than the manufacturer’s expected range. This is typically caused by an electrical fault in the sensor, its wiring, or connectors rather than a mechanical brake problem. When this code is active, the ABS/electronic stability system may disable or limit its operation as a safety precaution.
The sensor’s internal circuitry can short, causing a constant high‑voltage signal that the control module interprets as a circuit‑high condition.
A damaged wire in the sensor circuit can short to battery voltage or another high‑voltage source, pulling the signal high.
Moisture intrusion or physical damage can corrode the sensor connector pins, creating a high‑resistance contact that may allow unwanted voltage to appear on the signal line.
If the ground return path for the sensor is broken or corroded, the control module can misinterpret the sensor voltage as excessively high.
In very rare cases the control unit itself may incorrectly process the sensor signal, but this is usually a last resort after all wiring and sensor issues are ruled out.
Improperly installed accessories that share the same power or ground can inject higher voltage into the sensor circuit, causing a high reading.
The vehicle can still be driven, but the ABS and stability‑control systems may be disabled or limited; have the issue inspected promptly.
The PCM is rarely at fault for C0572. In most cases the problem is the sensor or its wiring; replace or repair those components before considering an ECU replacement.
Low battery voltage can cause sensor malfunctions, but a high‑voltage reading is usually the result of a short or defective sensor, not a weak battery.
Clearing the code without repairing the underlying fault will cause the code to return; proper diagnosis and repair are required.