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Home >> Jeep >> 2023 >> Compass Red >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P032F To P0440 >> DTC Troubleshooting >> P0426-Catalyst Temperature Sensor Circuit Performance (Bank 1 Sensor 1) >> Possible Causes

Possible Causes

Possible Causes
DAMAGED OR IMPROPERLY INSTALLED EXHAUST SYSTEM
DAMAGED OR IMPROPERLY INSTALLED GPF INLET TEMPERATURE SENSOR
GASOLINE PARTICULATE FILTER (GPF) TEMPERATURE SENSOR MODULE

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