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Home >> Chrysler >> 2021 >> Voyager LXi, Gas >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P1057 To P1D73 >> Diagnosis And Testing >> P1622-O2 Sensor Reference Voltage Circuit High >> Possible Causes

Possible Causes

Possible Causes
ANY O2 SENSOR RETURN CIRCUIT SHORTED TO VOLTAGE
ANY O2 SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
ANY OXYGEN SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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