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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (5.7L - DTCS P2167 To U0151) >> DTC Troubleshooting >> P2273-O2 Sensor 2/2 Signal Stuck Rich >> Possible Causes

Possible Causes

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Possible Causes
EXHAUST SYSTEM LEAK
O2 SENSOR 2/2 SIGNAL CIRCUIT
O2 SENSOR 2/2 RETURN CIRCUIT
O2 SENSOR 2/2

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