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Home >> Isuzu >> 1989 >> Pickup 1 Ton, MSG5E >> Repair and Diagnosis >> Engine Performance >> System >> Tests W/Codes - CARBURETED >> Trouble Code Charts

Trouble Code Charts

TROUBLE CODE IDENTIFICATION

Code No. System Affected Probable Cause
No Code System Normal System Normal
12 (1) Ignition Reference Signal Distributor, Circuit, ECM
13 (2) O2 Sensor Circuit O2 Sensor, Sensor Circuit, ECM
14 Shorted Coolant Temp. Signal Sensor, Sensor Ckt, ECM
15 (3) Open Coolant Temp. Signal Sensor, Sensor Ckt, ECM
21 Idle (Vacuum) Switch/MAP Sensor Switch, Sensor, Ckt, ECM
22 Fuel-Cut Solenoid or Relay Ckt Solenoid, Relay Ckt, ECM
23 Duty (Mixture Control) Solenoid Ckt Solenoid Ckt, ECM
25 AIR Switching Valve VSV Ckt VSV or Valve Ckt, ECM
26 & 27 (4) Canister Purge VSV Ckt VSV or Valve Ckt, ECM
31 (2) ,(4) ,(5) Ignition Reference Signal Wiring Ckt, ECM
32 (4) EGR System Malfunction EGR Valve, Thermal Vacuum Vacuum Valve, Backpressure Transducer
34 (4) EGR Gas Temperature Sensor Sensor, Sensor Ckt, ECM
44 (2) Oxygen Sensor - Lean Fuel Mixture Duty (Mixture Control) Solenoid, Oxygen Sensor, ECM
45 (2) Oxygen Sensor - Rich Fuel Mixture Duty (Mixture Control) Solenoid, Oxygen Sensor, ECM
51 Fuel-Cut Solenoid Ckt Solenoid, Solenoid Ckt, ECM
52 (4) Faulty ECM RAM ECM
53 AIR Switching Valve VSV or ECM Valve or ECM
54 Duty (Mixture Control) Solenoid Ckt Solenoid, Solenoid Ckt, ECM
55 Faulty ECM ECM
(1) Code will appear while fault exists before engine is started and will not be stored in memory.
(2) Requires engine operation at part throttle for up to 5 minutes after engine reaches normal operating temperature to set trouble code.
(3) Engine must operate at least 5 minutes before trouble code will be displayed.
(4) Applicable to Amigo and Pickup models only.
(5) No reference signal to ECM after 10 seconds at part throttle under load. Code will be stored in memory.
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