Conditions for Setting the DTC
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
P0721
The transmission control module detects an invalid Automatic Transmission Output Shaft Speed Sensor direction for 2.5 seconds.
P0722
- The transmission control module detects no signal from the Automatic Transmission Output Shaft Speed Sensor.
- The transmission output speed is less than 50 RPM for 1.5 seconds.
P0723
- The transmission control module detects an unrealistic signal drop from the Automatic Transmission Output Shaft Speed Sensor.
- Automatic Transmission Output Shaft Speed Sensor DTC P0723 has not failed this ignition.
- The transmission output speed is 1, 000 RPM or greater for 6 seconds.
- The transmission output speed drops 1, 000 RPM for greater than 6 seconds and does not recover.