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DTC - Diagnostic Trouble Codes information

P0643

Powertrain Codes

P0643 - DODGE - Sensor Reference Voltage 1 Circuit High

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- ECM Short circuit condition - Shorted sensor on 5 volt circuit - Failed ECM

Description

The ECM has detected that the 5 volt reference voltage is too high