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Home >> Jeep >> 2020 >> Grand Cherokee Laredo, AWD, Automatic T/Case Control >> Repair and Diagnosis >> External Pages >> Different car >> Section 587 (Air Suspension Control Module (ASCM) - DTCS C15B6-13 To U102B-00) >> DTC Troubleshooting >> U0420-00-Invalid Data Received From Power Steering Control Module A
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U0420-00-Invalid Data Received From Power Steering Control Module A

WARNING: This page is about a different car, the 2021 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.

The Air Suspension Control Module (ASCM) will set this DTC if the Electric Power Steering (EPS) module sends an invalid CAN message or SNA (signal not available) for any of the following:

CAN Messages  Description 
EPS_FD_1.LwsAngle Steering Angle Sensor Angle Value
EPS_FD_1.LwsSpeed Steering Angle Sensor Speed Value

Refer to DIAGNOSIS AND TESTING .

to diagnose the CAN network and EPS module.