Possible causes – Faulty EGR volume control solenoid valve– EGR volume control solenoid valve harness is open or shorted– EGR volume control solenoid valve circuit poor electrical connection– EGR temperature sensor and circuit When is the obd code mean? An improper voltage signal is sent to ECM through the valve Symptoms – Engine Light ON…
Tag: ISUZU
P0685 ISUZU Engine Controls Ignition Relay Control Circuit
Possible causes – Faulty Engine Control Module (ECM) power relay– ECM power relay harness is open or shorted– ECM power relay circuit poor electrical connection– Faulty (ECM) Tech description Check all the ECM fuses, if the fuses are OK try replacing the ECM relay. Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
P0641 ISUZU 5 Volt Reference Voltage Incorrect
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or lower than expected Symptoms – Engine Light…
P0651 ISUZU 5 Volt Reference Voltage Incorrect
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or lower than expected Symptoms – Engine Light…
P0643 ISUZU 5 Volt Reference 1 Circuit High Voltage
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher than expected Symptoms – Engine Light ON (or…
P0653 ISUZU 5 Volt Reference 2 Circuit High Voltage
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher than expected Symptoms – Engine Light ON (or…
P0566 ISUZU Cruise Control Off Signal.Resume Signal/Set Signal
Possible causes – Faulty Cruise Multifunction Switch– Cruise Multifunction Switch harness is open or shorted– Cruise Multifunction Switch circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected a fault in the Cruise Multifunction Switch Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Cruise control…
P0671 ISUZU Cylinder 1 Glow Plug Circuit Fault
Possible causes – Faulty cylinder #1 glow plug– Cylinder #1 glow plug harness is open or shroted– Cylinder #1 glow plug circuit poor electrical connection– Faulty glow plug module When is the obd code mean? The Engine Control Module (ECM) has detected a fault in the cylinder #1 glow plug circuit Symptoms – Engine Light…
P0315 ISUZU Crankshaft Position System Variation Not Learned
Possible causes – Faulty Crankshaft Position (CKP)– Crankshaft Position (CKP) sensor harness is open or shorted– Crankshaft Position (CKP) sensor circuit poor electrical connection– Damaged crankshaft pulse wheel teeth Tech description Visual inspection of the Crankshaft Position (CKP) sensor and crankshaft pulse wheel teeth for damage. If crankshaft teethes are OK, replaced the Crankshaft Position…
P0336 ISUZU Crankshaft Position Sensor Performance
Possible causes – Faulty crankshaft position sensor– Crankshaft position sensor harness is open or shorted– Crankshaft position sensor circuit poor electrical connection– Signal plate may be damage– Starter motor may be faulty– Starting system circuit– Dead or weak battery Tech description Sometimes and in some models, low battery voltage or a weak starter can can…