Pinpoint Test O : DTC (Diagnostic Trouble Code) U0253:87: 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.
DTC U0253:87
Refer to Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Parking Aid - System Operation and Component Description .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0253:87 | Lost Communication With Accessory Protocol Interface Module: Missing Message | Sets in continuous memory in the IPMB if expected messages from the APIM are not received for 5 seconds or more when the ignition is on. |
Possible Causes
- Communication network concern
- APIM
- IPMB concern
- GWM concern