The complaint
A 2015 Honda Accord with a 3.5-liter engine and the BB7A six-speed transmission (seen in figure 1, above), was involved in a minor collision to the left front of the vehicle. The vehicle was drivable and was taken to the transmission shop. Vehicle diagnostics revealed a P2720 “Pressure Control Solenoid D Voltage Low” was set and a no-reverse condition was also present.
The cause
Further diagnostics revealed that PCS D is on in reverse as seen in the solenoid application chart in figure 2.
As a result of the collision, the battery tray was driven towards the transmission where the externally mounted solenoids are located. This resulted in the Solenoid D connector being broken, as you can see in figures 3 and 4, and causing the code to set and the no reverse condition.
The correction
The solenoid body and battery tray were replaced which allowed the P2720 to be cleared, after which reverse functioned normally.
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