U0253 - Lost Communication With Accessory Protocol Interface Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Accessory Protocol Interface Module (APIM)
  • Accessory Protocol Interface Module (APIM) harness is open or shorted
  • Accessory Protocol Interface Module (APIM) circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U0253 Description

The Accessory Protocol Interface Module (APIM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN). The Powertrain Control Module (PCM) monitors the APIM. The PCM sets the OBDII code when the APIM is not to factory specifications.
OBDII Code U0253 - Lost Communication With Accessory Protocol Interface Module - AutoCodes.com

U0253 Information for specific makes

  • U0253 FORD Lost Communication With Accessory Protocol Interface Module
  • U0253 LINCOLN Lost Communication With Accessory Protocol Interface Module
  • U0253 MERCURY Lost Communication With Accessory Protocol Interface Module

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Related Information

U0253 Comments

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