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Home >> Jeep >> 2012 >> Wrangler Sport, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Transmission Control Module (TCM) - Electrical Diagnostics >> DTC Troubleshooting >> U1509-Implausible Engine Variant Message Data Length Received >> Set Condition:

Set Condition:

When the TCM detects an incorrect CAN ID from the ECM/PCM.

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