LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2024 >> Grand Cherokee Summit >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 72 (2.0L - DTCS P0420 To P0490) >> DTC Troubleshooting >> P0427-Catalyst Temperature Sensor Circuit Low (Bank 1 Sensor 1) >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
GPF TEMPERATURE SENSOR FUSED B+ OPEN/HIGH RESISTANCE
GPF TEMPERATURE SENSOR GROUND OPEN/HIGH RESISTANCE
GPF TEMPERATURE SENSOR
POWERTRAIN CONTROL MODULE (PCM)

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