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.
- U0202Generic · NetworkLost Communication With Door Control Module D
- U0203Generic · NetworkLost Communication With Door Control Module E
- U0204Generic · NetworkLost Communication With Door Control Module F
- U0205Generic · NetworkLost Communication With Door Control Module G
- U0206Generic · NetworkLost Communication With Folding Top Control Module
- U0207Generic · NetworkLost Communication With Moveable Roof Control Module A
- U0208Generic · NetworkLost Communication With Seat Control Module A
- U0209Generic · NetworkLost Communication With Seat Control Module B
- U020AGeneric · NetworkLost Communication With Moveable Roof Control Module “B”
- U020BGeneric · NetworkLost Communication With Door Control Module H
- U020CGeneric · NetworkLost Communication With Wireless Accessory Charging Module A
- U020DGeneric · NetworkLost Communication With Wireless Accessory Charging Module B
- U0210Generic · NetworkLost Communication With Seat Control Module C
- U0211Generic · NetworkLost Communication With Seat Control Module D
- U0212Generic · NetworkLost Communication With Steering Column Control Module
- U0213Generic · NetworkLost Communication With Mirror Control Module A
- U0214Generic · NetworkLost Communication With Remote Function Actuation Module
- U0215Generic · NetworkLost Communication With Door Switch A
- U0216Generic · NetworkLost Communication With Door Switch B
- U0217Generic · NetworkLost Communication With Door Switch C
- U0218Generic · NetworkLost Communication With Door Switch D
- U0219Generic · NetworkLost Communication With Door Switch E
- U0220Generic · NetworkLost Communication With Door Switch F
- U0221Generic · NetworkLost Communication With Door Switch G
- U0222Generic · NetworkLost Communication With Door Window Motor A
- U0223Generic · NetworkLost Communication With Door Window Motor B
- U0224Generic · NetworkLost Communication With Door Window Motor C
- U0225Generic · NetworkLost Communication With Door Window Motor D
- U0226Generic · NetworkLost Communication With Door Window Motor E
- U0227Generic · NetworkLost Communication With Door Window Motor F