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Home >> Dodge and Ram >> 2023 >> Durango GT, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (5.7L - DTCS P2112 To P2314) >> DTC Troubleshooting >> P2273-O2 Sensor 2/2 Signal Biased Rich >> Possible Causes

Possible Causes

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Possible Causes
OXYGEN SENSOR WIRING OR CONNECTORS
O2 SENSOR 2/2 SIGNAL CIRCUIT
O2 SENSOR 2/2 RETURN CIRCUIT
O2 SENSOR 2/2
POWERTRAIN CONTROL MODULE (PCM)

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