C3723 Code:

OBD-II Diagnostic Chassis (C) Trouble Code

Possible Cause

Common causes of C3723 include a faulty electronic pressure control solenoid, hydraulic blockages inside the internal transmission fluid passages, mechanical internal transmission failures, low transmission fluid, dirty or contaminated transmission fluid, a faulty PCM or transmission control module.

Common Symptoms

  1. Continue by clearing the code and operating the vehicle to see if it returns
  2. A suitable OBD-II scanner (or code reader) and a digital volt/ohmmeter will be most helpful in performing a successful diagnosis
  3. The exhaust gas temperature sensor is used in diesel engines, gasoline burning engines, and even turbocharged engines
  4. Check local, state, and federal laws before removing emission related components.

Similar Problems

Vehicle Speed Control And Idle Control System
Exhaust Gas Recirculation System Valve 1
A/C System High Pressure High Temperature

C3723 Troubleshooting

There will also be noise coming from the turning radiator fan and the belt that turn the fan blade. There are a multiple of other belt driven devices under the hood. An engine pulley is mounted to the engine of an automobile and drives all belts. Your car probably has a serpentine belt which is a continuous belt used to drive multiple peripheral devices. C3723 OBD2 may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.

How to turn off C3723 check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

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