Category: Chevrolet

P0408 Chevrolet 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…

P0409 Chevrolet Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction OBD Code: System: Subsystem:  P0409 Chevrolet – (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:

P0405 Chevrolet 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…

P0406 Chevrolet 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…

P0407 Chevrolet 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…

P0401 Chevrolet 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…

P0402 Chevrolet 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…

P0403 Chevrolet 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…

P0404 Chevrolet 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…

P0391 Chevrolet 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…

P0392 Chevrolet 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…

P0393 Chevrolet 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…

P0394 Chevrolet 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…

P0400 Chevrolet 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…

P0387 Chevrolet Crankshaft Position Sensor B Circuit Low Input 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,…

P0388 Chevrolet Crankshaft Position Sensor B Circuit High Input 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,…

P0389 Chevrolet Crankshaft Position Sensor B Circuit Intermittent 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…

P0390 Chevrolet Camshaft Position Sensor B Circuit 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…

P0382 Chevrolet Glow Plug/Heater Circuit B 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…

P0383 Chevrolet Glow Plug Control Module Circuit Low Possible causes – Faulty Glow Plug– Glow Plug harness is open or shorted– Glow Plug circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– The engine may be harder to start P0383 Chevrolet Description The glow plug system is used to…