Set Condition:
WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When the Powertrain Control Module (PCM) recognizes an internal failure to communicate with the the Camshaft Position Sensor (CMP) and Crankshaft Position Sensor (CKP) Sensor count periods are too short. One trip fault. ETC light is flashing.