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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Transmission Control Module (TCM) - DTCS P0219-00 To P1B13-00) >> DTC Troubleshooting >> P0721-00-Output Shaft Speed Sensor Circuit Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
OUTPUT SPEED SENSOR
TRANSMISSION INTERNAL FAILURE
TRANSMISSION CONTROL MODULE (TCM)

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