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Possible Causes

Possible Causes 
(T13) SPEED SENSOR GROUND CIRCUIT OPEN
(T13) SPEED SENSOR GROUND CIRCUIT SHORT TO GROUND
(T13) SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE
POWERTRAIN CONTROL MODULE

Always perform the  45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE   before proceeding. 

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