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C1749 Engine Trouble Code

Meaning of C1749 engine trouble code is : C1749 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 $2,000 and you can't do it yourself unless you're an experienced mechanic.

C1749 Possible Solution:

C1749 Engine

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.

C1749 Code Meaning :

C 1 7 4 9
OBD-II Diagnostic Chassis (C) Trouble Code For Engine Fuel And Air Metering Fuel Rail Pressure Sensor Circuit Malfunction Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector) Reverse Input Circuit

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.

C1749 OBD-II Diagnostic Chassis (C) Trouble Code Description

C1749 engine trouble code is about Reverse Input Circuit.

Reason For C1749 Code

The reason of C1749 OBD-II Engine Trouble Code is Fuel Rail Pressure Sensor Circuit Malfunction.

C1749 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.