Dodge Repair Questions? Ask a Mechanic for Answers ASAP
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For whatever reason the powertrain control module (PCM) is down. The PCM is the module that controls all engine functions.
The problem could be internal to the PCM or an external electrical problem. If the PCM loses a power or ground feed, the sensor ground circuit shorts to voltage, or a 5v reference feed shorts to ground these things will all take the PCM down. Possible causes for external issues would be a bad ignition switch, wiring, internally shorted sensor, etc.
Some electrical testing will need to be done to determine what is happening. The powers and grounds will need to be checked (preferably load tested), and the 5v and sensor ground circuits need to be tested for shorts. If everything check out ok yet the PCM is non responsive then it will need to be replaced.