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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (3.6L - DTCS P2246 To U1431) >> Diagnosis And Testing >> P2271-O2 Sensor 1/2 Signal Stuck Rich >> Possible Causes

Possible Causes

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Possible Causes
OXYGEN SENSOR WIRING OR CONNECTORS
(K141) O2 SENSOR 1/2 SIGNAL CIRCUIT
(K904) O2 SENSOR 1/2 RETURN CIRCUIT
O2 SENSOR 1/2
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .