OBD fault code library

Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.

Free on OBD DashX

Looking for real-world repair data?

OBD DashX shows which problems come with each code, how often they show up in other vehicles, and how to fix them — step by step.

Real-world fix data
How often it happens
Step-by-step repairs

Browse codes on OBD DashX No sign-up needed · available in 10 languages

Fault codes

U0174 Lost Communication With Restraints System Sensor E

Communication Network System High severity

U0179 Lost Communication With Restraints System Sensor J

Communication Network System High severity

U0182 Lost Communication With Lighting Control Module

Communication Network System High severity

U0186 Lost Communication With Audio Amplifier

Communication Network System High severity

U0188 Lost Communication With Digital Disc Player/Changer Module B

Communication Network System High severity

U0189 Lost Communication With Digital Disc Player/Changer Module C

Communication Network System High severity

U0190 Lost Communication With Digital Disc Player/Changer Module D

Communication Network System High severity

U0193 Lost Communication With Digital Audio Control Module A

Communication Network System High severity

U0195 Lost Communication With Subscription Entertainment Receiver Module

Communication Network System High severity

U0196 Lost Communication With Rear Seat Entertainment Control Module

Communication Network System High severity

U0197 Lost Communication With Telephone Control Module

Communication Network System High severity

U0198 Lost Communication With Telematics Control Module

Communication Network System High severity

U0199 Lost Communication With Door Control Module A

Communication Network System High severity

U0200 Lost Communication With Door Control Module B

Communication Network System High severity

U0201 Lost Communication With Door Control Module C

Communication Network System High severity