Category: Chevrolet

P0384 Chevrolet Glow Plug Control Module Circuit High 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 P0384 Chevrolet Description The glow plug system is used to…

P0385 Chevrolet Crankshaft Position Sensor B Circuit 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…

P0386 Chevrolet Crankshaft Position Sensor B Circuit Range/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…

P0377 Chevrolet Timing Reference High Resolution Signal B Too Few Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? Some high resolution pulses are missing from the optical…

P0378 Chevrolet Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? Some high resolution pulses are intermittent from the optical sensor…

P0379 Chevrolet Timing Reference High Resolution Signal B No Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? There are no high resolution pulses from the optical sensor…

P0380 Chevrolet 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…

P0381 Chevrolet 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…

P0372 Chevrolet Timing Reference High Resolution Signal A Too Few Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? Some high resolution pulses are missing from the optical…

P0373 Chevrolet Timing Reference High Resolution Signal A Intermittent/Erratic Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? Some high resolution pulses are intermittent from the optical sensor…

P0374 Chevrolet Timing Reference High Resolution Signal A No Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? There are no high resolution pulses from the optical sensor…

P0375 Chevrolet Timing Reference High Resolution Signal B Malfunction Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? Some high resolution pulses are missing from the optical sensor to…

P0376 Chevrolet Timing Reference High Resolution Signal B Too Many Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? There are too many high resolution pulses from the…

P0367 Chevrolet Camshaft Position Sensor B Circuit Low Bank 1 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 What about the obd code? The camshaft position sensor signal is sent the Engine…

P0368 Chevrolet Camshaft Position Sensor B Circuit High Bank 1 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 What about the obd code? The camshaft position sensor signal sent to the Engine…

P0369 Chevrolet Camshaft Position Sensor B Circuit Intermittent 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 What about the obd code? The camshaft position sensor signal sent to the Engine Control Module(ECM)…

P0370 Chevrolet Timing Reference High Resolution Signal A Malfunction Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? A number of high resolution pulses missing per every 8 cam…

P0371 Chevrolet Timing Reference High Resolution Signal A Too Many Pulses Possible causes – Timing Reference Optical Sensor harness is open or shorted– Timing Reference Optical Sensor circuit poor electrical connection– Faulty Timing Reference Optical Sensor– Damaged Powertrain Control Module (PCM) What about the obd code? There are too many high resolution pulses from the…

P0361 Chevrolet Ignition Coil 11 Primary/Secondary Circuit Malfunction Possible causes – Faulty Ignition Coil 11– Ignition Coil 11 harness is open or shorted– Ignition Coil 11 circuit poor electrical connection– Faulty Engine Control Module (ECM) What about the obd code? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails…

P0362 Chevrolet Ignition Coil 12 Primary/Secondary Circuit Malfunction Possible causes – Faulty Ignition Coil 12– Ignition Coil 12 harness is open or shorted– Ignition Coil 12 circuit poor electrical connection– Faulty Engine Control Module (ECM) What about the obd code? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails…