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.
DTC Chart: Powertrain Control Module (PCM)
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
Powertrain Control Module (PCM) DTC Chart
| DTC | Description | Action |
|---|---|---|
| P059F | Active Grille Air Shutter "A" Performance / Stuck Off | GO to Pinpoint Test A |
| P05A1 | Active Grille Air Shutter "A" Position Sensor Minimum / Maximum Stop Performance | GO to Pinpoint Test A |
| P05A2 | Active Grille Air Shutter "A" Control Circuit / Open | INSTALL a new grille shutter actuator. REFER to: Active Grille Shutter Actuator . |
| P05A7 | Active Grille Air Shutter Control Module "A" Supply Voltage Circuit Low | GO to Pinpoint Test A |
| P05C0 | Active Grille Air Shutter Module "A" Over Temperature | INSTALL a new grille shutter actuator. REFER to: Active Grille Shutter Actuator . |
| U0046 | Vehicle Communication Bus C | GO to Pinpoint Test A |
| U0284 | Lost Communication With Active Grille Air Shutter Module "A" | GO to Pinpoint Test A |
| All other Diagnostic Trouble Codes (DTCs) | - | Refer to the appropriate article for the procedure. |
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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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