Fuel System Fault Codes Index

1111 Defective memory circuits in control unit
2121 Idle switch
2122 No engine speed signal to control unit
2123 Full throttle switch stuck closed
2141 Knock regulation
2142 Knock sensor
2223 Altitude sensor
2232 Air sensor potentiometer
2233 Ref. voltage for air sensor and altitude sensor
2312 Coolant temp. sensor
2341 Oxygen sensor control
2342 Oxygen sensor
4341 Differential pressure regulator
4343 Carbon canister shut-off solenoid
4431 Idle stabilizer valve
4443 Cold start injector
4444 No faults stored in memory
0000 End of diagnosis