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 Explorer STFACTORY OEM SERVICE PROCEDURE
DTC Chart: Powertrain Control Module (PCM)
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| DTC | Description | Action |
|---|---|---|
| P0504 | Brake Switch A / B Correlation | GO to Pinpoint Test C |
| P0572 | Brake Switch A Circuit Low | GO to Pinpoint Test C |
| P0573 | Brake Switch A Circuit High | GO to Pinpoint Test C |
| P1703 | Brake Switch Out Of Self-Test Range | GO to Pinpoint Test C |
| P1935 | Brake Switch/Sensor Signal | GO to Pinpoint Test C |
| All other Diagnostic Trouble Codes (DTCs) | - | For 6.2L, REFER to: Electronic Engine Controls - 6.2L V8. For 6.8L, REFER to: Electronic Engine Controls - 6.8L Triton-30V - V10. For 6.7L Diesel, REFER to: Electronic Engine Controls - 6.7L Power Stroke Diesel. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.