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C3973 Engine Trouble Code

Meaning of C3973 engine trouble code is : C3973 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. Taking your car into a shop will cost you around $200 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.

C3973 Possible Solution:

C3973 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.

C3973 Code Meaning :

C 3 9 7 3
OBD-II Diagnostic Chassis (C) Trouble Code For Engine Ignition System Or Misfire Injector Circuit Malfunction - Cylinders Cylinder 10 Contribution/balance Fault Exhaust Gas Recirculation Sensor B Circuit High

Regarding the C3973 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

C3973 OBD-II Diagnostic Chassis (C) Trouble Code Description

C3973 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For C3973 Code

The reason of C3973 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.

C3973 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.