FMI 504 CAT Fault Code
Cylinder #4 Spark Plug Maintenance Required
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.Vehicle in Service Mode or ON The parking assist is activated. The activation takes place through putting in the reverse gear or through operating the parking assist switch.
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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