Conditions for Setting the DTC

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Cadillac Escalade ESV, and 2018 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

P0721

Output Speed Sensor Direction Signal = Not Plausible - For greater than 3.5 s

P0722

Output Speed Sensor = Less than 31 RPM - For greater than 4 s

P0723

Output Speed Sensor = Decreases greater than 31 RPM - For greater than 7.5 s

P077C

Output Speed Sensor = Less than 0.25 V - For greater than 1 s

P077D

Output Speed Sensor = Greater than 4.75 V - For greater than 1 s

P077A

Current Gear = Forward Gear & Output Shaft Speed Sensor Direction = Reverse - For greater than 2.5 s

P077B

Current Gear = Reverse Gear & Output Shaft Speed Sensor Direction = Forward - For greater than 2.5 s