U029F - Lost Communication with Evaporative Emission System Leak Detection Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
Comments  |  Add Comment

Possible causes

  • Invalid data network concerns
  • data is transferred within the normal inter-module message, but contains known invalid data. The transmitting module logs a DTC related to the invalid data concern.
  • Missing message network concerns
  • missing message concerns are logged by the module upon failure to receive a message from another module within a defined retry period.

Possible symptoms

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

U029f Description

Network DTC concerns occur during module-to-module communication.
OBDII Code U029f - Lost Communication with Evaporative Emission System Leak Detection Control Module - AutoCodes.com

U029F Information for specific makes

  • U029F FORD Lost Communication with Evaporative Emission System Leak Detection Control Module
  • U029F HYUNDAI Lost Communication with Evaporative Emission System Leak Detection Control Module
  • U029F KIA Lost Communication with Evaporative Emission System Leak Detection Control Module
  • U029F LINCOLN Lost Communication with Evaporative Emission System Leak Detection Control Module
  • U029F MERCURY Lost Communication with Evaporative Emission System Leak Detection Control Module

Need more help?

Get the U029f code diagnosed by a professional: Find a repair shop in your area

Related Information

U029F Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the U029f code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧