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Home >> Jeep >> 2021 >> Grand Cherokee Trackhawk >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 6.2L - DTCS P2110 To P2627 >> DTC Troubleshooting >> P2240-O2 Sensor 2/1 Pumping Current Circuit/Open >> Possible Causes

Possible Causes

Possible Causes
O2 2/1 POSITIVE CURRENT CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
O2 SENSOR 2/1
POWERTRAIN CONTROL MODULE (PCM)

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

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