Conditions for Setting the DTC
WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DTC P1810 sets on the first occurrence in which any of the following conditions occur:
Condition 1
- The engine speed is greater than 400 RPM for 7 seconds.
- The PCM detects an illegal TFP manual valve position switch state for 60 seconds.
Condition 2
- The engine speed is less than 50 RPM for 0.3 second, 50-525 RPM for 0.025 second, then the engine speed is greater than 525 RPM.
- The vehicle speed is less than 8 km/h (5 mph).
- Engine RPM sequence must occur within 30 seconds of key ON.
- The PCM detects the gear range D2, D4 or REVERSE before and after start up.
- All conditions are met for 7 seconds and AT ISS is greater than 200 RPM.
Condition 3
- The vehicle speed is greater than 8 km/h (5 mph).
- The throttle angle is greater than 10 percent.
- The PCM detects an invalid state of the TFP sensor or the TFP circuit.
- The TFP switch indicates the following:
- P/N when the ratio indicates third or fourth gear for greater than 15 seconds.
- Reverse when the ratio indicates D4, D3, D2, and D1 for greater than 15 seconds.
- D4, D3, D2, and D1 when the ratio indicates reverse for greater than 7 seconds.