Pinpoint Test H : U0126:87, U0428:00: Notes
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The SASM is also known as the PSCM.
Normal Operation and Fault Conditions
With the ignition ON, the PSCM sends messages to the VDM over the HS-CAN. If the VDM does not receive these messages within a certain time frame, the VDM sets DTCs. For information on the network messages sent to the VDM by the PSCM, refer to Vehicle Dynamic Suspension .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0126:87 | Lost Communication with Steering Angle Sensor Module: Missing Message | This DTC sets in continuous memory if the steering wheel angle message is missing. This can be due to a PSCM failure, a circuit failure on the HS-CAN or an excessive load on the network. |
| U0428:00 | Invalid Data Received from Steering Angle Sensor Module: No Sub Type Information | This DTC sets in continuous memory if the steering wheel angle message contains "invalid" instead of valid steering wheel angle data. |
Possible Causes
- Network communication concern
- Vehicle battery
- Charging system concern
- PSCM