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Home >> Fiat >> 2017 >> 124 Spider Classica, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 ((Aw6R31 Automatic Transmission Control Module (TCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> P077D-00-Output Shaft Speed Sensor Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
OUTPUT SPEED SENSOR SIGNAL (-) CIRCUIT SHORTED TO VOLTAGE
OUTPUT SPEED SENSOR
TRANSMISSION CONTROL MODULE (TCM)

Always perform the DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE   .

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