Pinpoint Test AE : U0253:00: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
PAM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | Sets in continuous memory in the PAM if data messages received from the APIM through the GWM are missing for 5 seconds or longer. |
Possible Causes
- Communication concern
- GWM concern
- APIM
- PAM (integral to the BCM on vehicles without active park assist) concern