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Home >> Jeep >> 2007 >> Commander Limited, 5.7 2, RWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P2127 To P2610 >> P2271-O2 Sensor 1/2 Signal Stuck Rich >> Possible Causes
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Possible Causes

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

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

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