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Home >> Chrysler >> 2012 >> 300 C, RWD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Transmission Control Module (TCM) - Nag1 Automatic Transmission >> Diagnosis And Testing >> U1509-Implausible Engine Variant Message Data Length Received >> Possible Causes
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Possible Causes

Possible Causes
BCM CAN BUS DTCS PRESENT
ECM/PCM DTCS PRESENT
TRANSMISSION CONTROL MODULE (TCM)

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  . 

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