To know real cause of Rover 3-Litre C1874 based of if this code is present in your two-wheel drive vehicle, suspect a faulty PCM or programming error. In most four wheel drive applications the four-wheel drive switch is used to switch between two and four wheel drive operation, as well as between low and high ranges
Having one of the signs of a bad gasket is usually not enough to prove a failure of a gasket, but multiple symptoms are most likely the result of gasket failure. It is advisable to have the vehicle driven as little as possible whenever the symptoms occur. Depending on the symptoms, either have the gasket replaced or repaired.
The cost of replacing a gasket usually varies from one mechanic to the other. Replacing a gasket is quite expensive in modern engines due to their location and the amount of labor that is required to replace them. Rover 3-Litre C1874 OBD2 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.
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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