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Home >> Dodge and Ram >> 2013 >> Charger SRT-8 >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics - Nag1) >> DTC Troubleshooting >> U0424-Implausible Data Received From HVAC Control Module >> Possible Causes

Possible Causes

Possible Causes 
CAN BUS DTCS PRESENT
HVAC DTCS PRESENT
TRANSMISSION CONTROL MODULE (TCM)

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  NAG1 PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE   . 

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