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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (2.4L - DTCS P1500 To P2271) >> DTC Troubleshooting >> P2239-O2 Sensor 1/1 Pump Cell Current Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
O2 SENSOR O2 1/1 POSITIVE CURRENT CONTROL CIRCUIT SHORT TO BATTERY VOLTAGE
O2 SENSOR O2 1/1 PUMP CELL CURRENT TRIM CIRCUIT SHORT TO BATTERY VOLTAGE
O2 SENSOR 1/1
POWERTRAIN CONTROL MODULE (PCM)

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