Condition No. 3 For Setting DTC P1810

WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The vehicle speed is greater than 5 MPH.
The throttle angle is greater than 10 percent.
The PCM detects an invalid state of the pressure switch assembly sensor or the circuit.

The TFP switch indicates the following:

Park or Neutral when the ratio indicates less than 1.05: 1 for greater than 15 seconds.
Reverse when the ratio indicates "D4", "D3", "D2", and "D1" for greater than 10 seconds.
"D4", "D3", "D2", and "D1" when the ratio indicates Reverse for greater than 7 seconds.