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.