Skip the auto shop - Our mechanics make house calls

Q: P1810 Pressure Manifold Fault

asked by on

I own a 2001 Monte Carlo SS with a 3.8 motor and a 4T65E transmission. VIN# 2g1wx15k319226376. The block of the motor cracked and the transmission was

slipping so I replaced it with the same size motor and same number transmission from a 2003 Jeff Gordon edition Monte Carlo SS VIN# 2g1wx12k739358113. The

motor would not start so the mechanic replaced the wiring harness and it started with the 2001 computer (coded 1LDB) but the transmission has given a code

(P1810 pressure manifold switch fault) and would not shift properly. We hauled the car to a transmission shop and replaced the computer with the 2003

computer(coded 3LDB) and the car would not start again. We replaced the 03 computer with the 01 computer and it once again started but it is shifting

hard and showing the same P1810 again. Any advice to fix this issue would be greatly appreciated. Thank you.

My car has 139000 miles.
My car has an automatic transmission.

If you have code P1810, then this might be something wrong with the transmission control valve for the gear position sensor, or a compatibility problem between the different computers. Have a pinpoint test for the code done and see if it comes up with a failed part or ECM problem that cannot be fixed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Starters for mazda 2001

Hi there. A manual transmission starter has a different housing and fits differently to the flywheel than an automatic transmission starter. It's always best to swap flywheel's to match the starter anytime a transmission swap is completed.

Q: Gas line leaking

Fuel lines by the engine on GM cars are usually plastic and use quick connects. The fuel rail that houses the injectors is steel. The leak could be a failed O-ring or a cracked line. Do not delay this repair...

Q: Electrical issues with the gauges, interior lights, and rear wiper blade.

Hi there. When it comes to multiple systems and the electrical circuits malfunction, there is a power and ground issue. Check the battery cables and clean them with a tooth brush and baking soda with water. This will clean off...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...