P0669 MAZDA ECM/TCM Internal Temperature Sensor Circuit High
Possible causes – ECM/TCM programming error
P0401 2001 TOYOTA CAMRY Exhaust Gas Recirculation Flow Insufficient 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
P0401 FORD Exhaust Gas Recirculation Flow Insufficient 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
P0401 LINCOLN Exhaust Gas Recirculation Flow Insufficient 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
P0401 MERCURY Exhaust Gas Recirculation Flow Insufficient 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
P0401 AUDI Exhaust Gas Recirculation Flow Insufficient 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
P0401 CHRYSLER Exhaust Gas Recirculation System Performance
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
P0401 Exhaust Gas Recirculation Flow Insufficient 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
P0401 DODGE Exhaust Gas Recirculation System Performance
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
P0401 ISUZU Exhaust Gas Recirculation Flow Insufficient 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
P0401 JEEP Exhaust Gas Recirculation System Performance
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
P0401 KIA Exhaust Gas Recirculation Flow Insufficient 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
P0401 LEXUS Exhaust Gas Recirculation Flow Insufficient 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
P0401 MAZDA Exhaust Gas Recirculation Flow Insufficient 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
P0401 MITSUBISHI Exhaust Gas Recirculation Flow Insufficient 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
P0401 SCION Exhaust Gas Recirculation Flow Insufficient 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
P0401 TOYOTA Exhaust Gas Recirculation Flow Insufficient 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
P0401 BUICK Exhaust Gas Recirculation Flow Insufficient
Possible causes – EGR passage clogged– Faulty EGR Valve– EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection Tech notes EGR flow malfunction could be caused by a clogged EGR valve or EGR tube.
P0401 CADILLAC Exhaust Gas Recirculation Flow Insufficient
Possible causes – EGR passage clogged– Faulty EGR Valve– EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection Tech notes EGR flow malfunction could be caused by a clogged EGR valve or EGR tube.
P0401 CHEVROLET Exhaust Gas Recirculation Flow Insufficient
Possible causes – EGR passage clogged– Faulty EGR Valve– EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection Tech notes EGR flow malfunction could be caused by a clogged EGR valve or EGR tube.