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CID 438 CAT Fault Code

Hydraulic Control Valve Warm Up Solenoid #1

Cause :

If the battery voltage falls below a minimum level, these memories are cleared and the TCM determines that there is a malfunction in the power supply circuit. When the engine is next started, the TCM will illuminate the MIL and set the DTC.It starts at the battery, includes ignition switch, fuses, starter solenoid, starter relay, and multiple safety devices, such as clutch position sensor and the neutral safety switches.


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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