P1870 ISUZU Transmission Component Slipping

Possible causes – Trailer towing may set code– Check transmission fluid level– Internal transmission fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1870 ISUZU OBD Code Description

P0689 ISUZU Engine Controls Ignition Relay Feedback Circuit Low Voltage

Possible causes – Weak battery – Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Tech description Check all the ECM fuses, if the fuses are OK try replacing the ECM relay. Symptoms – Engine Light ON (or…

P0690 ISUZU Engine Controls Ignition Relay Feedback Circuit High Voltage

Possible causes – Weak battery – Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Tech description Check all the ECM fuses, if the fuses are OK try replacing the ECM relay. Symptoms – Engine Light ON (or…

P0686 ISUZU Engine Control Ignition Relay Control Circuit Low Voltage

Possible causes – Weak battery- Low voltage while cranking– Faulty Engine Control Module (ECM) relay– Blown ECM fuse– Faulty ECM– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0686 ISUZU OBD Code Description The Engine Control Module (ECM) has detected a…

P0615 ISUZU Start Signal Circuit

Possible causes – Park/neutral position (PNP) relay (starter relay)– Park/neutral position (PNP) relay (starter relay) harness is open or shorted– Park/neutral position (PNP) relay (starter relay) circuit poor electrical connection– Faulty Transmission Control Module (TCM) When is the obd code mean? The P0615 codes is detected when park/neutral (PNP) relay (starter relay) is switched

P1171 ISUZU Fuel System Lean During Acceleration

Possible causes – Plugged air intake or exhaust– Plugged fuel filter– Fuel pump failure– Injector failure Symptoms – Engine Light ON (or Service Engine Soon Warning Light) ISUZU Related P1171 code 1998 ISUZU RODEO Engine And Engine Cooling:engine:gasoline 1998 ISUZU TROOPER Engine And Engine Cooling:engine:gasoline 1999 ISUZU RODEO Engine And Engine Cooling:engine:gasoline 1999 ISUZU TROOPER…

P0740 ISUZU Torque Converter Clutch Solenoid Valve Circuit Fault

Possible causes – Low transmission fluid level– Dirty transmission fluid– Faulty torque converter clutch solenoid valve– Torque converter clutch solenoid valve harness is open or shorted– Torque converter clutch solenoid valve circuit poor electrical connection When is the obd code mean? Diagnostic trouble code P0740 is detected when TCM detects an improper voltage drop when…

P0742 ISUZU Torque Converter Clutch Circuit Stuck On

Possible causes – Low transmission fluid level– Dirty transmission fluid– Faulty torque converter clutch solenoid valve– Torque converter clutch solenoid valve harness or connectors– Torque converter clutch solenoid valve circuit is open or shorted– Transmission internal mechanical problem Tech description When the a transmission solenoid is stuck on, in most cases the problem is not…

P0741 ISUZU Torque Converter Clutch System Failure

Possible causes – Low transmission fluid level– Dirty transmission fluid– Faulty torque converter clutch solenoid valve– Torque converter clutch solenoid valve harness or connectors– Torque converter clutch solenoid valve circuit is open or shorted– Transmission internal mechanical problem When is the obd code mean? Lock-up does not occur when driving in lock-up range or lockup…