Possible causes – Dirty Oil– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Variable Valve Timing (VVT) harness is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Damaged Engine Control Module (ECM) Tech notes
Possible causes – Dirty Oil– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Variable Valve Timing (VVT) harness is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Damaged Engine Control Module (ECM) When is
Possible causes – Dirty Oil– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Variable Valve Timing (VVT) harness is open or shorted– Oil Control Valve (OCV) harness is open or shorted– Damaged ECM Tech notes If the engine
Possible causes – Dirty Oil– Faulty variable valve timing (VVT)– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty oil control valve (OCV)– Damaged Engine Control Module (ECM) Tech notes
Possible causes – Dirty Oil– Faulty variable valve timing (VVT)– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty oil control valve (OCV)– Damaged Engine Control Module (ECM) When is
Possible causes – Dirty Oil– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Damaged ECM Tech notes If the engine
Possible causes – Dirty Oil– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Damaged ECM Tech notes If the engine
Possible causes – Dirty Oil– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Damaged ECM When is the code detected?
Possible causes – Dirty Oil– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Damaged Engine Control Module (ECM) Tech notes
Possible causes – Dirty Oil– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Damaged Engine Control Module (ECM) Tech notes
Possible causes – Dirty Oil– Variable Valve Timing (VVT) circuit is open or shorted– Oil Control Valve (OCV) circuit is open or shorted– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Damaged Engine Control Module (ECM) When is
Possible causes – Dirty Oil– Variable Valve Timing (VVT) sensor circuit is open or shorted– Variable Valve Timing (VVT) sensor poor electrical connection– Faulty Variable Valve Timing (VVT) sensor– Damaged ECM Tech notes There is a factory service bulletin for
Possible causes – Dirty Oil– Variable Valve Timing (VVT) sensor circuit is open or shorted– Variable Valve Timing (VVT) sensor poor electrical connection– Faulty Variable Valve Timing (VVT) sensor– Damaged ECM When is the code detected? The Engine Control Module
Possible causes – Dirty Oil– Variable Valve Timing (VVT) sensor circuit is open or shorted– Variable Valve Timing (VVT) sensor poor electrical connection– Faulty Variable Valve Timing (VVT) sensor– Damaged ECM When is the code detected? The Engine Control Module
Possible causes – Dirty or low engine oil– Faulty variable valve timing (VVT)– Faulty oil control valve (OCV)– Variable Valve Timing (VVT) harness is open or shorted– Oil Control Valve (OCV) harness circuit is open or shorted– Damaged ECM Tech
Possible causes – Dirty transmission fluid– Low transmission fluid level– Faulty line pressure solenoid valve ‘A’– Line pressure solenoid valve ‘A’ harness is open or shorted– Line pressure solenoid valve ‘A’ circuit poor electrical connection When is the code detected?
Possible causes – EGR passage clogged– Faulty EGR Vacuum Modulator Valve– Faulty EGR Valve– Faulty EGR solenoid valve– EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection– Dead (Weak) battery– Faulty EGR temperature sensor
Possible causes – EGR volume control valve stuck open– Faulty EGR volume control valve– EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection– Faulty EGR temperature sensor and circuit When is the code detected?
Possible causes – Electronic Throttle Control System (ETCS).– Air induction system– PCV hose connection When is the code detected? The ECM regulates the idle speed by opening and closing the throttle valve using the ETCS. The ECM concludes that the
Possible causes – Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio