Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 34 (PARKING BRAKE SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2013 Buick Regal Turbo Premium, Standard Trans
Diagnostic Code Index
2013 Buick Regal Turbo Premium, Standard TransSECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC C028A | C028A 01: Park Brake Motor Circuit Short to Battery C028A 02: Park Brake Motor Circuit Short to Ground C028A 04: Park Brake Motor Circuit Open Circuit C028A 08: Park Brake Motor Circuit Performance-Signal Invalid C028A 28: Park Brake Motor Circuit Performance-Incorrect Frequency |
| DTC C028B | C028B 08: Park Brake Motor Position Sensor Signal Performance-Signal Invalid C028B 26: Park Brake Motor Position Sensor Signal Low Frequency C028B 29: Park Brake Motor Position Sensor Signal Too Few Pulses C028B 2A: Park Brake Motor Position Sensor Signal Too Many Pulses |
| DTC C028D | C028D 00: Replace Park Brake Pad Malfunction |
| DTC C028F | C028F 01: Park Brake Solenoid Actuator Circuit Short to Battery C028F 02: Park Brake Solenoid Actuator Circuit Short to Ground C028F 08: Park Brake Solenoid Actuator Circuit Performance-Signal Invalid |
| DTC C0293 | C0293 01: Park Brake Switch Control Short to Battery C0293 06: Park Brake Switch Control Low Voltage/Open C0293 08: Park Brake Switch Control Performance-Signal Invalid |
| DTC C0298 | C0298 00: Park Brake Unlatch Switch Circuit Malfunction |
| DTC C0558 | C0558 55: Calibration Data Too Few Transitions C0558 5A: Calibration Data Not Plausible |
| DTC C0561 | C0561 71: System Disabled Information Stored-Invalid Serial Data Received |
| DTC C0574 | C0574 01: Circuit Board Temperature Sensor Short to Battery C0574 02: Circuit Board Temperature Sensor Short to Ground C0574 54: Circuit Board Temperature Sensor High |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.