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Home >> Jeep >> 2024 >> Grand Cherokee Summit >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 51 (Hybrid Control Processor Module (HCP) - DTCS P2613-00 To P2E75-00) >> DTC Troubleshooting >> P29BB-00-Coolant Heater "A" Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
HIGH TEMP COOLING LOOP LEAKS OR RESTRICTIONS
HIGH VOLTAGE (HV) COOLANT HEATER

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

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