Network fault codes
1534 Network OBD-II fault codes: what each one means, 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.
- U0698Generic · NetworkLost Communication with Coolant Pump “E”
- U0699Generic · NetworkLost Communication with Coolant Pump “F”
- U069AGeneric · NetworkLost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 3
- U069BGeneric · NetworkLost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 4
- U069CGeneric · NetworkLost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 3
- U069DGeneric · NetworkLost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 4
- U069EGeneric · NetworkLost Communication with Coolant Heater A
- U069FGeneric · NetworkLost Communication With Exhaust Pressure Sensor C
- U0901Generic · NetworkInvalid Data from Ion Sense Module
- U1000Generic · NetworkManufacturer Controlled DTC
- U1000Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1001Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1002Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1003Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1004Other · NetworkSCP (J1850) Invalid or Missing Data for EEC Programming
- U1005Other · NetworkSCP (J1850) Invalid or Missing Data for EEC Programming
- U1006Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1007Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1008Other · NetworkSCP (J1850) Invalid or Missing Data for Engine Torque
- U1009Other · NetworkSCP (J1850) Invalid or Missing Data for Engine Torque
- U1010Other · NetworkSCP (J1850) Invalid or Missing Data for Engine Air Intake
- U1011Other · NetworkSCP (J1850) Invalid or Missing Data for Engine Air Intake
- U1012Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1013Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1014Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1015Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1016Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1017Other · NetworkSCP (J1850) Invalid or Missing Data for Primary Id
- U1018Other · NetworkSCP (J1850) Invalid or Missing Data for Throttle
- U1019Other · NetworkSCP (J1850) Invalid or Missing Data for Throttle