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U3668 Engine Trouble Code

Meaning of U3668 engine trouble code is a kind of network trouble code and U3668 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,140 and you can't do it yourself unless you're an experienced mechanic.

U3668 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for U3668 code is occuring now you should check U3668 repair processes.
Now don't ask yourself; What should you do with U3668 code ?
The solution is here :

U3668 Possible Solution:

Gasoline engines use spark plugs to cause an explosion of fuel within the cylinder. In a properly timed engine, this explosion occurs at the proper moment to send the piston to the bottom of the cylinder and provide power to the drive shaft. If the plug wires are out of sequence, the explosion occurs at the wrong time. The improper timing of the explosion sometimes pushes the cylinder the wrong direction or interferes with the turning of the crank. As a result, the engine stutters or backfires, if it runs at all.

U3668 Code Meaning :

U	3	6	6	8
OBD-II Diagnostic Network (U) Trouble Code For Engine	Ignition System Or Misfire	Fuel Temperature Sensor B Circuit Range/Performance	Cylinder 4 Contribution/Balance Fault	Clutch Position Sensor 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.

U3668 OBD-II Diagnostic Network (U) Trouble Code Description

U3668 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Main reason For U3668 Code

The reason of U3668 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

U3668 DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.

	Example: 0140