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.
2021 Ford Mustang Mach 1, Automatic TransFACTORY OEM SERVICE PROCEDURE
Powertrain Control Module (PCM)
| DTC | Description | Action |
|---|---|---|
| P0504:00 | Brake Switch A / B Correlation: No Sub Type Information | GO to Pinpoint Test B |
| P0572:00 | Brake Switch A Circuit Low: No Sub Type Information | GO to Pinpoint Test B |
| P0573:00 | Brake Switch A Circuit High: No Sub Type Information | GO to Pinpoint Test B |
| P0833:00 | Clutch Pedal Switch "B" Circuit: No Sub Type Information | For 2.3L engines, GO to Pinpoint Test D For 5.0L engines, GO to Pinpoint Test E |
| P170A:00 | Clutch Switch Out of Self-Test Range: No Sub Type Information | For 2.3L engines, GO to Pinpoint Test D For 5.0L engines, GO to Pinpoint Test E |
| P1703:00 | Brake Switch Out Of Self-Test Range: No Sub Type Information | GO to Pinpoint Test B |
| All other Diagnostic Trouble Codes (DTCs) | - | Refer to the appropriate Engine article(s) for the procedure. |
Factory Service Tools
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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.
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