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C3746 Engine Code Repair

Meaning of C3746 engine trouble code is a kind of chassis trouble code and C3746 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,200. Taking your car into a shop will cost you around $210 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

C3746 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting

If one of these reasons for C3746 code is occuring now you should check C3746 repair processes.
Now don't ask yourself; What should you do with C3746 code ?
The solution is here :

C3746 Possible Solution:

C3746 Engine

Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.

C3746 Code Meaning :

C
OBD-II Diagnostic Chassis (C) Trouble Code For Engine

3
Ignition System Or Misfire

7
Fuel Temperature Sensor B Circuit Range/Performance

4
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

6
Crankshaft Position Sensor B Circuit Malfunction

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

C3746 OBD-II Diagnostic Chassis (C) Trouble Code Description

C3746 engine trouble code is about Crankshaft Position Sensor B Circuit Malfunction.

Main reason For C3746 Code

The reason of C3746 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

C3746 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.