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 P171F: General Description
The park pawl actuator driver unit controls the park pawl actuator to switch to and unlock the P position by the command from the powertrain control module (PCM). If the switch/unlock action to the P position has not been completed after the switch/unlock command to the P position is output from the PCM, the PCM receives a malfunction from the park pawl actuator driver unit and stores a DTC.
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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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