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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
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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  .