DTC P0720: Output Shaft Speed (OSS) Sensor Circuit
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
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. The PCM compares this signal with the signal of the vehicle speed sensor (VSS) or transfer case speed sensor (TCSS) and determines the correct tire size and axle gear ratio. | ||
| Possible Causes: |
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| 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 TJ: Output Shaft Speed (OSS) Sensor STEP TJ1. |
| All others | Refer to AUTOMATIC TRANSMISSION . | ||