Pinpoint Test M: DTC (Diagnostic Trouble Code) U0253:00: Notes
WARNING: This page is about a different car, the 2023 Lincoln Nautilus. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0253:00
Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
The IPMA communicates with the APIM on the HS-CAN1 through the GWM.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | A continuous memory DTC that sets in the IPMA if messages received from the APIM over the HS-CAN1 through the GWM are missing for 0.5 seconds or more. |
Possible Causes
- Communication network concern
- APIM
- IPMA concern
- GWM concern