12 |
No Distributor Reference Pulses |
13 |
Oxygen Sensor Circuit |
14 |
Coolant Temperature Sensor Circuit |
15 |
Coolant Temperature Sensor Circuit |
21 |
Throttle Position Sensor and/or Idle Switch |
21 |
MAP Sensor (1989 I-Mark) |
22 |
Throttle Position Sensor Circuit |
22 |
No Starter Signal (I-Mark, MPFI) |
22 |
Fuel Cut Off Relay (Carbureted) |
23 |
M/C Solenoid Circuit (Carbureted) |
23 |
Manifold Absolute Temperature Sensor Circuit |
24 |
Vehicle Speed Sensor |
25 |
Manifold Absolute Temperature Sensor or Vacuum Switching Valve |
26 |
Vacuum Switching Valve System |
27 |
Vacuum Switching Valve System |
31 |
No Ignition Reference Pulses to ECM (Carbureted) |
31 |
Wastegate Control |
32 |
EGR System |
33 |
MAP Sensor Circuit |
33 |
Fuel Injector (1988-1991 Impulse, others with 2.6L Engine) |
34 |
MAP Sensor Circuit |
34 |
EGR Gas Sensor Circuit (Carbureted, Stylus & 1990-1992
Turbocharged Impulse) |
34 |
Fuel Injector (Impulse) |
35 |
Power Transistor System |
36 |
MAP Sensor Circuit |
41 |
Crank Angle Sensor |
41 |
Cam Signal (Stylus & 1990-1992 Turbocharged Impulse) |
42 |
Fuel Cut Off Relay (Carbureted) |
42 |
Electronic Spark Timing (Throttle Body Injection) |
42 |
Ignition Control Circuit |
43 |
Electronic Spark Control |
43 |
Knock Sensor (I-Mark, MPFI) |
43 |
Throttle Valve Switch (1988-1991 Impulse, others with 2.6L
Engine) |
44 |
Oxygen Sensor Lean |
44 |
Fuel Metering (1988-1991 Impulse, others with 2.6L Engine) |
45 |
Oxygen Sensor Rich |
45 |
Fuel Metering (1988-1991 Impulse, others with 2.6L Engine) |
51 |
Fuel Cutoff Solenoid Circuit (Pickup, Carbureted) or ECM (all
models) |
52 |
ECM (PROM, EEPROM, ROM, RAM, or ECM itself) |
53 |
Vacuum Switching Valve and/or ECM |
54 |
M/C Solenoid Circuit and/or ECM (I-Mark, Carbureted) |
54 |
Vacuum Control Solenoid and/or ECM (Pickup, Carbureted) |
54 |
Power Transistor System |
54 |
Fuel Pump, Voltage Low (TBI and I-Mark, MPFI) |
55 |
ECM |
61 |
Air Flow Sensor |
62 |
Air Flow Sensor |
63 |
Vehicle Speed Sensor |
64 |
Fuel Injector |
66 |
Knock Sensor |
71 |
Throttle Position Sensor |
72 |
Vacuum Switching Valve Faulty EGR |
73 |
Vacuum Switching Valve Faulty EGR |
The Diagnostic Codes and Explanations are
derived from Manufacturer supplied Technical Data. WesTech does not guarantee the
accuracy of this Information nor can it be held liable for providing it. |