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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2289 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> DTC P0720: Output Shaft Speed (OSS) Sensor Circuit

DTC P0720: Output Shaft Speed (OSS) Sensor Circuit

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2010 Mercury Mountaineer, 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, and 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0720: OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT

Description:  The OSS sensor inputs a signal to the powertrain control module (PCM) based on the speed of the output shaft of the transmission.
Possible Causes: 
  • OSS sensor circuit short to GND
  • OSS sensor circuit short to voltage
  • OSS sensor circuit open
  • Damaged OSS sensor
Diagnostic Aids:  Verify the sensor signal output varies with the vehicle speed.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Manual Transmission - - GO to PINPOINT TEST DP .
Automatic Transmission Refer to the Diagnostic Trouble Code (DTC) Index in the appropriate AUTOMATIC TRANSMISSION/TRANSAXLE article to continue diagnosis.
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