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
Fault codes
U1040
SCP (J1850) Invalid or Missing Data for Vehicle Speed
Communication Network System
High severity
U1043
SCP (J1850) Invalid or Missing Data for Traction Control
Communication Network System
High severity
U1052
SCP (J1850) Invalid or Missing Data for Steering / Steering Wheel
Communication Network System
High severity
U1056
SCP (J1850) Invalid or Missing Data for Vehicle Configuration
Communication Network System
High severity
U1059
SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL
Communication Network System
High severity
U1071
SCP (J1850) Invalid or Missing Data for Engine Sensors
Communication Network System
High severity
U1072
SCP (J1850) Invalid or Missing Data for Engine Coolant
Communication Network System
High severity
Scan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.