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.
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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 494 (EPAS GUIDED ROUTINE)DTC/SYMPTOM SELECTIONDTC INDEXPSCM - POWER STEERING CONTROL MODULEDTC U0159: LOST COMMUNICATION WITH PARKING ASSIST CONTROL MODULE ADESCRIPTION
2021 Ford Edge SE, 4WD
DTC U0159: Lost Communication With Parking Assist Control Module A: Description
2021 Ford Edge SE, 4WDSECTION Description
WARNING: This page is about a different car, the 2020 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The PAM is integrated into the BCM.
The PSCM monitors the HS-CAN messages when the ignition has been on for more than 5 seconds, the voltage to the PSCM is greater than 9 volts and there are no DTCs present inhibiting PSCM operation.
- DTC U0159:00 (Lost Communication With Parking Assist Control Module A: No Sub Type Information) - This DTC is set if communication between the PSCM and the PAM fails. The PAM sends various commands to the PSCM along the HS-CAN. If these commands are missing for more than the allotted amount of time, the PSCM sets DTC U0159:00.
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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.