How do you solve the p1810 code - 2007 Chevrolet Silverado 2500HD

What wire ? a number of wires go to the transmission .

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DTC P1810 TFP Valve Position Switch Circuit


Circuit Description
The Automatic Transmission Fluid Pressure Manual Valve Position switch (TFP Val. Position Sw.) consists of five normally open switches. Ignition voltage is applied to each of the switches. By grounding one or more of these switches with fluid pressure from the manual valve, the Powertrain Control Module (PCM) can detect which gear range is selected.
If the PCM detects an invalid combination of the TFP Val. Position Sw., then DTC P1810 sets. DTC P1810 is a Type B DTC.

Diagnostic Aids
• Inspect the wiring for poor electrical connections at the PCM. Inspect the wiring for poor electrical connections at the transmission 20-way connector. Inspect the wiring for poor electrical connections at the 5-way TFP Val. Position Sw. connector. Look for the following problems:
- A bent terminal
- A backed out terminal
- A damaged terminal
- Poor terminal tension
- A chafed wire
- A broken wire inside the insulation
- Moisture intrusion
• When diagnosing for an intermittent short or open, massage the wiring harness while watching the test equipment for a change.
• If a transmission overhaul was performed, ensure that the transmission fluid is at the proper level. A low fluid problem may set this DTC.
• Diagnose DTC 1520 first, if set.
• Inspect the TFP Val. Position Sw. for debris.


If you want to tackle this you need to get service repair info. from GM web site https://www.oem1stop.com/content/cadillac

or www.alldatadiy.com

You going to need wiring diagrams , componet location , pin out charts for the PCM -engine computer ,pinout of transmission 20 way connector

I have factory service repair info , for this code

DTC P1810 TFP Valve Position Switch Circuit

there is a 40 step diagnostic flow chart ,this code could be caused by wiring issue , the TFP Valve Position Switch could be bad or it could even be a bad PCM . Are you sure you want to tackel this ?

Check out this page
http://praxairsverdlovsk.ru/valve-body-and-pressure-switch-replacement/
Reviews of the car

Here's a link to your P1810 CODE. P1810 GMC TFP Valve Position Switch Circuit

Replace main trans pres solenoid

Thats a Tfp switch malfunction..replace solenoid and torque converter. That should fix the problem.

Code 14 is for a problem with the exhaust cam sensor, code 16 is for a problem with the crank and cam sensor correlation.
Code 1810 is for a problem with a pressure switch, but it is usually inside the transmission and involves the torque converter.

p0122 is a throttle position sensor/switch bad.

p1810 is a TFP valve position switch circuit/transmission 4wheel drive low indicator short circuit to battery.


p0410 is a secondary air injection system malfunction.

P1810 BUICK - TFP Valve Position Switch Circuit

Do you have transmission problems?

The P1810 means "TFP Valve Position Switch Circuit/ Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery"
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P1810....ATF pressure manual valve position switch malfunction. I think it is external. but i could find little information on this particular code. it is probably attached on the transmission itself. it should have a vacuum plug attached.