LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2020 >> Grand Cherokee Trackhawk >> Repair and Diagnosis >> External Pages >> Different car >> Section 225 (As69RC Automatic Transmission - DTCS C1400-00 To P0869-00 - 3500HD) >> DTC Troubleshooting >> P0721-00-Output Shaft Speed Sensor Circuit Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2019 RAM 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
OUTPUT SPEED SENSOR SUPPLY (+) CIRCUIT SHORTED TO GROUND
OUTPUT SPEED SENSOR SUPPLY (+) CIRCUIT OPEN
OUTPUT SPEED SENSOR SUPPLY (+) CIRCUIT SHORTED TO ANOTHER CIRCUIT
OUTPUT SPEED SENSOR SUPPLY (+) CIRCUIT SHORTED TO BATTERY VOLTAGE
OUTPUT SPEED SENSOR SIGNAL (-) CIRCUIT SHORTED TO GROUND
OUTPUT SPEED SENSOR SIGNAL (-) CIRCUIT OPEN
OUTPUT SPEED SENSOR SIGNAL (-) CIRCUIT SHORTED TO ANOTHER CIRCUIT
OUTPUT SPEED SENSOR SIGNAL (-) CIRCUIT SHORTED TO BATTERY VOLTAGE
OUTPUT SPEED SENSOR
TRANSMISSION CONTROL MODULE (TCM)

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