DTC codes
Look up an OBD-II fault code: what it means on every car or on your make, and how to track it down.
How to read a code
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 4
- AreaAuxiliary emission controls
- 20
- FaultThe specific fault in that area
Read the code
Note every stored and pending code your scanner shows, such as P0420.
Find it
Search by code or by words. For a manufacturer code (P1, B1, C1, U1) pick your make: its meaning differs by make.
Open the code
Its page explains the symptoms, likely causes, the checks to run and the fixes.
- U0269Generic · NetworkLost Communication With Image Processing Sensor E
- U026AGeneric · NetworkLost Communication With Image Processing Sensor F
- U026BGeneric · NetworkLost Communication With Image Processing Sensor G
- U026CGeneric · NetworkLost Communication With Image Processing Sensor H
- U026DGeneric · NetworkLost Communication With Image Processing Sensor I
- U026EGeneric · NetworkLost Communication With Image Processing Sensor J
- U026FGeneric · NetworkLost Communication With Image Processing Sensor K
- U0270Generic · NetworkLost Communication With Image Processing Sensor L
- U0271Generic · NetworkLost Communication With Seat Control Switch Module C
- U0272Generic · NetworkLost Communication With Seat Control Switch Module D
- U0273Generic · NetworkLost Communication With Lighting Driver Control Module “A”
- U0274Generic · NetworkLost Communication With Lighting Driver Control Module “B”
- U0275Generic · NetworkLost Communication With Lighting Driver Control Module “C”
- U0276Generic · NetworkLost Communication With Lighting Driver Control Module “D”
- U0277Generic · NetworkLost Communication With Seat Control Module K
- U0278Generic · NetworkLost Communication With Seat Control Module L
- U0279Generic · NetworkLost Communication with Haptic Control Module
- U027AGeneric · NetworkLost Communication With Battery Charger Control Module C
- U027BGeneric · NetworkLost Communication with Battery Charger Control Module D
- U027CGeneric · NetworkLost Communication With Off-Board Charger Control Module
- U0284Generic · NetworkLost Communication With Active Grille Air Shutter Module A
- U0285Generic · NetworkLost Communication With Active Grille Air Shutter Module B
- U0286Generic · NetworkLost Communication With Radiator Anti Tamper Device
- U0287Generic · NetworkLost Communication With Transmission Fluid Pump Module A
- U0288Generic · NetworkLost Communication With DC/AC Converter Control Module A
- U0289Generic · NetworkLost Communication With DC/AC Converter Control Module B
- U028AGeneric · NetworkLost Communication With Transmission Fluid Pump Module B
- U028BGeneric · NetworkLost Communication With Active Grille Air Shutter Module C
- U028CGeneric · NetworkLost Communication With Active Grille Air Shutter Module D
- U028DGeneric · NetworkLost Communication with Active Aerodynamic Feature Control Module A