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CID 21 CAT Fault Code

Engine Position Sensor

Cause :

The cause of the problem may lie in the knock sensor, as well as in the use of low-quality oil or in the breakdown of one of the components of the ignition system.Malfunction of the variable valve lift system. The control unit notes that the position of the natural opening of the throttle is not reached. The problem often comes out after cleaning the latter. The engine stalls immediately at the factory or at idle.


Don't forget ! When a fault code pops up, CAT's Uptime Center is automatically notified via an cellular link, and it alerts the truck's owner by prearranged methods, usually email or phone calls.

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