Category: OBDii Powertrain Codes

P0410 Secondary Air Injection System Malfunction Possible causes – Faulty Vacuum hoses damaged– Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection– Air bypass solenoid leaking/blocked or stuck open/closed– Air diverter valve leaking/blocked or stuck open/closed What about the obd code? The secondary air injection…

P0411 Secondary Air Injection System Insufficient Flow Possible causes – Vacuum hoses damaged or pinched– Faulty Air Pump inoperative– Faulty Air Pump harness is open or shorted– Faulty Air Pump circuit poor electrical connection What about the obd code? The AIR system does not meet the expected flow rate during testing Symptoms – Engine Light…

P0406 Exhaust Gas Recirculation Temperature Sensor Circuit High Input Possible causes – EGR Valve clogged, dirty or leaky– EGR valve damaged/defective– EGR volume control solenoid valve– EGR temperature sensor and circuit– EGR volume control solenoid valve harness is open or shorted– EGR volume control solenoid valve circuit poor electrical connection What about the obd code?…

P0407 Exhaust Gas Recirculation Sensor B Circuit Low Possible causes – 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 What about the obd code? An improper voltage signal is sent to ECM through…

P0408 Exhaust Gas Recirculation Sensor B Circuit High Possible causes – 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 What about the obd code? An improper voltage signal is sent to ECM through…

P0409 Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction OBD Code: System: Subsystem:  P0409 – (ASE)  Powertrain  Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction Location: Analysis: Possible Causes:  Sensor A  Circuit Malfunction   Tech description:

P0391 Camshaft Position Sensor B Circuit Range/Performance Bank 2 Possible causes – Faulty Camshaft Position Sensor– Camshaft Position Sensor harness is open or shorted– Camshaft Position Sensor circuit poor electrical connection– Faulty starter motor– Starting system circuit– Dead (Weak) battery Tech description Sometimes and in some models, low battery voltage or a weak starter can…

P0392 Camshaft Position Sensor B Circuit Low Bank 2 Possible causes – Faulty Camshaft Position Sensor– Camshaft Position Sensor harness is open or shorted– Camshaft Position Sensor circuit poor electrical connection– Faulty starter motor– Starting system circuit– Dead (Weak) battery Tech description Sometimes and in some models, low battery voltage or a weak starter can…

P0393 Camshaft Position Sensor B Circuit High Bank 2 Possible causes – Faulty Camshaft Position Sensor– Camshaft Position Sensor harness is open or shorted– Camshaft Position Sensor circuit poor electrical connection– Faulty starter motor– Starting system circuit– Dead (Weak) battery Tech description Sometimes and in some models, low battery voltage or a weak starter can…

P0394 Camshaft Position Sensor B Circuit Intermittent Bank 2 Possible causes – Faulty Camshaft Position Sensor– Camshaft Position Sensor harness is open or shorted– Camshaft Position Sensor circuit poor electrical connection– Faulty starter motor– Starting system circuit– Dead (Weak) battery Tech description Sometimes and in some models, low battery voltage or a weak starter can…

P0400 Exhaust Gas Recirculation Flow Possible causes – Exhaust Gas Recirculation (EGR) volume control valve stuck closed– Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve– Faulty EGR Valve– Faulty EGR temperature sensor and circuit– Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted– Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical…

P0401 Exhaust Gas Recirculation Flow Insufficient Detected Possible causes – EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection– EGR volume control valve stuck closed– Dead (Weak) battery– Faulty EGR temperature sensor and circuit– Faulty EGR Valve– EGR passage clogged– Exhaust gas leaks Tech description EGR flow malfunction could…

P0402 Exhaust Gas Recirculation Flow Excessive Detected 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 What about the obd code? High Exhaust Gas Recirculation (EGR) flow control is…

P0403 Exhaust Gas Recirculation Control Circuit 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 What about the obd code? An improper voltage signal is sent to ECM through the valve…

P0404 Exhaust Gas Recirculation Control Circuit Range/Performance Possible causes – 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 What about the obd code? An improper voltage signal is sent to ECM through the valve…

P0405 Exhaust Gas Recirculation Position Sensor Circuit Low Voltage 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 What about the obd code? An improper voltage signal is sent to Powertrain…

P0380 Glow Plug/Heater Circuit A Malfunction Possible causes – Faulty Glow Plug– Glow Plug harness is open or shorted– Glow Plug circuit poor electrical connection What about the obd code? – The glow plugs are commanded OFF and the glow plug feedback is more than 2 volts. or– The glow plugs are commanded on and…

P0381 Glow Plug/Heater Indicator Circuit Malfunction Possible causes – Faulty Glow Plug– Glow Plug harness is open or shorted– Glow Plug circuit poor electrical connection What about the obd code? – The glow plugs are commanded OFF and the glow plug feedback is more than 2 volts. or– The glow plugs are commanded on and…