DTC P1571-64: Brake Switch - Signal plausibility failure: Action
- The signal from the hardwired brake pedal switch does not agree with the brake status message broadcast on CAN
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the brake pedal switch circuits for short circuit to ground, short circuit to power, open circuit, high resistance. Repair circuit as required. Clear DTC and retest
- If fault persists, check and install a new brake pedal switch as required