Category: Chevrolet

P1413 Chevrolet SAI System Monitor Circuit Low Input Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1414 Chevrolet SAI System Monitor Circuit High Input Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1415 Chevrolet Air Pump Electric Current Sensor Circuit Low Voltage Possible causes – Secondary Air Injection check valve bank 2– Secondary Air Injection (AIR) pump electrical circuit fault – Blocked Secondary Air Injection (AIR) system – Faulty Secondary Air Injection (AIR) pump What about the obd code? The P1415 Chevrolet code is set when no…

P1407 Chevrolet EGR Air Intrusion In Exhaust Supply To EGR Valve

P1408 Chevrolet EGR Flow Out Of Self Test Range Possible causes For vacuum activated systems, see the possible causes for DTC P0401 Chevrolet. For electric motor systems, see the possible causes for DTC P0400 Chevrolet. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1408 Chevrolet Description This test is performed during the…

P1409 Chevrolet EVR Control Circuit Malfunction Possible causes EGRVR circuit open. VPWR open to EGRVR solenoid. EGRVR circuit short to VPWR or GND. Damaged EGRVR solenoid. Damaged PCM. Tech description The EGR vacuum regulator solenoid resistance is between 26 and 40 ohms. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1409 Chevrolet…

P1410 Chevrolet EGR Valve Position Sensor Circuit Malfunction Possible causes – EGR Valve Position Sensor Tech description Usually replacing the EGR Valve Position Sensor takes care of the problem. The sensor is located on top of the EGR valve. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1410 Chevrolet Description The EGR…

P1403 Chevrolet Exhaust Gas Recirculation System Valve 1 Possible causes – Faulty Diagnostic Module Tank Leakage (DMTL)– Diagnostic Module Tank Leakage harness is open or shorted– Diagnostic Module Tank Leakage circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1403 Chevrolet Description The heated DMTL (Diagnostic Module Tank Leakage)…

P1404 Chevrolet Exhaust Gas Recirculation Closed Position Performance Possible causes – Faulty Exhaust Gas Recirculation (EGR) valve– Carbon blockage of the pintle Tech description On some models, there is a service bulletin for the P1404 Chevrolet code that suggest reprogramming the Powertrain Control Module (PCM) to repair the problem. What about the obd code? While…

P1405 Chevrolet EGR Temperature Incorrect Possible causes – Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor)– Plugged or damaged EGR tube– Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted– Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…

P1406 Chevrolet EGR Valve Pintle Position Circuit Possible causes – Faulty Exhaust Gas Recirculation (EGR) valve– Carbon blockage of the pintle Tech description The P1406 Chevrolet code means that the EGR valve is 10% of the expected position by the Powertrain Control Module (PCM), usually caused by carbon built up n the EGR valve. Start…

P1402 Chevrolet EGR Function Open Possible causes – The EGR volume control valve circuit harness is open or shorted– EGR volume control valve leaking or stuck open– Faulty EGR temperature sensor Tech description Start by cleaning the EGR valve, if the code persist it may be necessary to replaced the EGR Valve Symptoms – Engine…

P1399 Chevrolet Wheel Speed Sensor 2, G-Sensor Circuit Intermittent Possible causes – Valve clearance out of range– Blocked EGR (exhaust gas recirculation) Passages Tech description Adjusting the valves will usually fix this problem. What about the obd code? The control module monitors the crankshaft speed and has detected a misfire condition Symptoms – Engine Light…

P1400 Chevrolet Manifold Differential Pressure sensor condition Possible causes – Differential Pressure Feedback Electronic Sensor harness is open or shorted– Differential Pressure Feedback Electronic Sensor circuit poor electrical connection– Faulty Differential Pressure Feedback Electronic Sensor Tech description There is a factory service bulletin for the following Lincoln models: 2001-2002 Lincoln Town CarLincoln Factory Service Bulletin…

P1401 Chevrolet EGR Temperature Sensor Possible causes – EGR Temperature Sensor harness is open or shorted– EGR Temperature Sensor circuit poor electrical connection– Faulty EGR Temperature Sensor– Malfunction of EGR function, EGRC-BPT valve or EGRC-solenoid valve– Blocked EGR passages What about the obd code? An excessively low voltage from the Exhaust Gas Recirculation (EGR) temperature…

P1395 Chevrolet Wheel Speed Sensor 2 – G – Sensor Circuit

P1396 Chevrolet Wheel Speed Sensor Circuit Possible causes – Faulty Wheel Speed Sensor– Wheel Speed Sensor harness is open or shorted– Wheel Speed Sensor circuit poor electrical connection What about the obd code? The Engine Control Module (ECM) detects an invalid rough road signal from the wheel speed sensor. P1396 Chevrolet Description The road situation…

P1397 Chevrolet Wheel Speed Sensor 2, G-Sensor Circuit Low Voltage

P1398 Chevrolet Wheel Speed Sensor 2 – G – Sensor Circuit High Voltage

P1391 Chevrolet Wheel Speed Sensor 1, G-Sensor Circuit Performance Possible causes – Timing belt or chain stretched or jumped– Faulty Camshaft Position (CMP) Sensor – Camshaft Position (CMP) Sensor harness is open or shorted– Camshaft Position (CMP) Sensor circuit poor electrical connection. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1391 Chevrolet…