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Home >> Dodge and Ram >> 2017 >> Challenger SXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 458 (Vehicle System Interface Module (VSIM) Module - Electrical Diagnostics - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P170D-Engine Rpm Output Circuit High >> Possible Causes
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Possible Causes

WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ENGINE RUNNING STATUS SIGNAL OPEN OR SHORTED TO VOLTAGE
AFTERMARKET LIGHT/SIREN CONTROLLER
VEHICLE SYSTEM INTERFACE MODULE (VSIM)