Isuzu Trouble codes
| 12 | No tach signal to ECM - No Distributor Reference Pulses{4} |
| 13 | Oxygen sensor or circuit |
|
14 |
Coolant Temperature Sensor Circuit |
|
High Coolant Temperature{5} | |
|
14A |
High Coolant Temperature{6} |
|
14B |
Low Coolant Temperature{6} |
|
15 |
Coolant Temperature Sensor Circuit |
|
Low Coolant Temperature{5}{7} | |
| 16 | Same as 15 |
|
21 |
TP Sensor And/Or Idle Switch |
|
MAP Sensor{1} | |
|
TP Sensor, Voltage High{5}{7} | |
| Throttle valve switch/Wide Open Throttle (WOT) position sensor, 1989 Manifold Absolute Pressure (MAP) circuit failure | |
| Throttle Position Sensor (TPS) - V6 models | |
|
21A |
TP Sensor, Voltage High{6} |
|
21B |
TP Sensor, Voltage Low{6} |
| 22 | Starter signal system/1988 and 1989 fuel cut solenoid circuit failure |
|
TP Sensor | |
|
TP Sensor, Voltage Low{5}{7} | |
|
No Starter Signal{8} | |
|
Fuel Cut Off Relay{4} | |
|
23 |
MAT Sensor |
|
MAT Sensor, Low Temp{7} | |
|
M/C Solenoid Circuit{4} | |
|
Mixture control solenoid circuit failure - 1987 and 1995 Amigo/Pick-up, 1989 to 1994 V6 models | |
|
Power transistor circuit - 1988 to 1994 four-cylinder models | |
| Intake Air Temperature sensor voltage high - turbo, 1989 to 1995 1.6L, 1.8L, 3.2L vehicles | |
|
23A |
MAT Sensor, Low Temp{6} |
|
23B |
MAT Sensor, High Temp{6} |
| 24 | Vehicle Speed Sensor (VSS) circuit - V6 models |
| Pressure regulator vacuum switching valve - 1988 to 1994 four-cylinder, also Impulse non-turbo | |
|
25 |
MAT Sensor |
|
Vacuum Switching Valve{4}{9} | |
|
MAT Sensor, High Temp{7} | |
| Intake Air Temperature sensor voltage high - turbo, 1989 to 1995 1.6L, 1.8L, 3.2L vehicles | |
| AIR VSV circuit failure | |
|
26 |
Canister Vacuum Switching Valve{4} |
|
VSV System{9} | |
|
27 |
VSV System{9} |
|
Constant Voltage High From VSV To ECM{4} | |
| Fuel injector driver transistor | |
|
31 |
No Ignition Reference Pulses To ECM{4} |
|
Wastegate Control{7}{8} | |
| No ignition reference to ECM - 1988 and 1989 models | |
| 32 | Exhaust Gas Recirculation (EGR) system failure |
|
33 |
MAP Sensor |
|
MAP Sensor, Voltage High{5}{7} | |
|
Fuel Injector{9} | |
|
33A |
MAP Sensor, Voltage High?Low{6} |
|
33B |
MAP Sensor, Voltage Low?High{6} |
|
34 |
MAP Sensor{8}{11} |
|
MAP Sensor, Voltage Low{5} | |
|
EGR Gas Sensor Circuit{4}{7} | |
|
Fuel Injector{10} | |
|
35 |
MAP Sensor Constant Voltage High{4} |
|
Power Transistor System{9} | |
|
36 |
MAP Sensor Circuit{4} |
|
41 |
Crank Angle Sensor{9} |
|
Cam Signal{7} | |
|
42 |
Fuel Cut Off Relay{4} |
|
Electronic Spark Timing{5} | |
|
Ignition Control Circuit{6}{8} | |
| 43 | Throttle valve switch/Wide Open Throttle (WOT) position sensor {9} |
| Electronic spark control failure - V6 models | |
| Idle contact switch always closed (1988 to 1994 four-cylinder, also Impulse non-turbo) | |
| 1989 Manifold Absolute Pressure (MAP) circuit failure | |
| Knock sensor (1989 to 1995 1.6L, 3.2L) {8} | |
|
44 |
O2S Lean |
|
Fuel Metering{9} | |
|
45 |
Oxygen sensor (rich condition indicated) |
|
Fuel Metering{9} | |
|
51 |
PROM{2}{8} |
|
Fuel Cut Solenoid Circuit And/Or ECM{3} carbureted four-cylinder models | |
|
ECM{6} | |
|
MEM-CAL{7} | |
|
PROM, Cal-Park & ECM{5} | |
|
ROM and/or RAM{9} | |
|
52 |
ECM{4} |
|
EEPROM{8} | |
|
ROM and/or RAM{9} | |
|
PROM, Cal-Park & ECM{5} | |
|
53 |
Switching Valve And/Or ECM{4} |
|
Vacuum Switching Valve{9} | |
|
54 |
M/C (mixture control) Solenoid Circuit And/Or ECM{2} |
|
Vacuum Control Solenoid And/Or ECM{3} | |
|
Power Transistor System{9} | |
|
Fuel Pump, Voltage Low{5}{8} | |
| Shorted vacuum control solenoid, Faulty Electronic Control Module (ECM) - 1988 and 1989 models | |
|
55 |
ECM{4}{8} |
|
PROM, Cal-Park & ECM{5} | |
| Faulty Electronic Control Module (ECM) or oxygen sensor | |
| 61 | Air flow sensor circuit failure {9} |
| 62 | Air flow sensor circuit failure {9} |
| 63 | Vehicle Speed Sensor (VSS) circuit {9} |
| 64 | Fuel injector driver transistor {9} |
|
65 |
Throttle valve switch/Wide Open Throttle (WOT) position sensor, 1989 Manifold Absolute Pressure (MAP) circuit failure |
|
Full throttle switch always on | |
| 66 | Knock sensor circuit failure {9} |
| 71 | Throttle position switch signal abnormal {9} |
| 72 | VSV for EGR system short or open {9} |
| 73 | Same as 72 transister or ground {9} |
|
{1}?1989 I-Mark. |
{2}?I-Mark, carbureted. |
|
{3}?Pickup, carbureted. |
{4}?Carbureted models. |
|
{5}?Throttle body fuel injection. |
{6}?Rodeo & Trooper w/3.2L engine, Stylus & 1990?92 Impulse less turbocharger. |
|
{7}?Stylus & 1990?92 Impulse w/turbocharger. |
{8}?I-Mark, multi-port fuel injection. |
|
{9}?Amigo, Pickup, Rodeo & Trooper w/2.6L engine & 1988?91 Impulse. |
{10}?Impulse. |
|
{11}?Amigo, Pickup, Rodeo & Trooper. |
