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Possible Causes

WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
SPEED SENSOR GROUND CIRCUIT OPEN
POWERTRAIN CONTROL MODULE

Always perform the 42RLE Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  42RLE - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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