B3723 Volkswagen 1-litre OBD Code

OBD/2 B3723 error code description and symptoms.

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

B3723 Volkswagen 1-litre Error Code Repair Process :

If your transmission 4wd mode select return input circuit failure check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system B3723 and engine control unit are in charge of monitoring a bunch of different transmission 4wd mode select return input circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Volkswagen 1-litre B3723 OBD2 Code

A common cause of code B3723 is the failure of Transmission 4WD Mode Select Return Input Circuit Failure, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
Faulty Mass Air Flow (MAF) sensor
Faulty Intake Valve Timing Control Solenoid Valve
Radio frequency interference (RFI)

B3723 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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B3723 Volkswagen 1-litre OBD Code

B3723 Volkswagen 1-litre Error Code Repair Process :

Common Causes of Volkswagen 1-litre B3723 OBD2 Code

B3723 code for other Volkswagen cars