P1810 code trans.pressure switch assembly manifold fult

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

Anon, Check the attached links,instruction and guides, Good luck
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http://www.gmfullsize.com/threads/p1810-tfp-valve-switch-malfunction-any-other-reasons-for-this-code.30177
P1810 Trans Press Switch Malfunction
P1810 Chevrolet TFP Valve Position Switch Circuit
P1810 Undefined Code 2000 2006 2007 2014 Chevrolet Silverado GMC Sierra...

with a scan tools look for data of transmission.
then look for A,B,C,D switch data and compare with chart
these valve are there to confirm oil pressure has been going to the right component.
see witch one of a b c d switch malfunction and have a test to wire from transmission to pcm
signal to pcm it's only a logic pattern on and off state
on is grounded
off is not grounded then if wire is ground then it send a message of malfunctionning switch or oil pressure inside transmission but do the outside diagnosis before
hope it helps

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.

P1810 BUICK - TFP Valve Position Switch Circuit

Do you have transmission problems?

Hi there:
The automatic Transmission Fluid Pressure (TFP) manual valve position switch consists of five pressure switches (two normally-closed and three normally-open), and a transmission Fluid Temperature (TFT) sensor combined into one unit. The combined unit mounts on the valve body.
The Powertrain Control Module (PCM) supplies ignition voltage for each range signal. By grounding one or more of these circuits through various combinations of the pressure switches, the PCM detects which manual valve position you select. The PCM compares the actual voltage combination of the switches to a TFP manual valve position switch combination chart stored in memory.

The TFP manual valve position switch cannot distinguish between PARK and NEUTRAL because the monitored valve body pressures are identical. With the engine OFF and the ignition switch in the ON position, the TFP manual valve position switch indicates PARK/NEUTRAL. Disconnecting the AT inline 20-way connector removes the ground potential for the three range signals to the PCM. In this case, with the engine OFF, and the ignition switch in the ON position, D2 will be indicated.

When the PCM detects an invalid state of the TFP manual valve position switch circuit by deciphering the TFP manual valve position switch inputs, then DTC P1810 sets.Action Taken When the DTC SetsThe PCM illuminates the Malfunction Indicator Lamp (MIL) during the second consecutive trip in, which the Conditions for Setting the DTC are met.The PCM commands D2 line pressure.The PCM commands a D4 shift pattern.The PCM freezes transmission adapt functions.The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure Records.The PCM stores DTC P1810 in PCM history during the second consecutive trip in, which the Conditions for Setting the DTC are met.Since the computer does not know what gear range the transmission is shifted into, it defaults to a higher line pressure to protect the transmission. It also commands the transmission as if it were in the D4 position. The transmission will still shift normally through all the gears, shifts may be more firm than normal. No damage will occur to the transmission if driven even for prolonged periods with this dtc set. It is far more likely that the loss of transmission fluid damaged the transmission.

Hope helps.

A trans shop will need to check it for you. Its not ON the trans its IN the trans. Have your local repair shop recommned a trans shop (theres a lot of crooks out there, stay away from any chain store)

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.