P1811 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

OBD-II Trouble Shooting Got a code reader? Find out what your GM car's Check Engine light is trying to tell you (and then turn Check Engine light off).

Thread Tools Search this Thread
Old 02-19-2010, 11:51 PM   #1
Retired Senior Admin

Expert Gearhead
Thread Starter
Danthurs's Avatar
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default P1811


Maximum adapt and long shift

Disable shift adapts
Maximum line pressure


  • Failure of pressure control solenoid
  • Short in wire harness
  • Loss of 12v on pin E
  • Worn clutch plates
  • Check for 12v on pin E
  • Check for Ohms on pins C-D, 3-5ohms at 68*f If out of range, replace EPC
  • Check for short on wire harness
  • Replace worn clutches.
Danthurs is offline  

Related Topics
Thread Thread Starter Forum Replies Last Post
Question on P0420 & P1811 bradycat Pontiac 13 12-14-2014 05:23 PM
2002 Buick Regal with P1811 code regalfuts Buick 3 03-20-2013 09:46 AM
Making Transmission throw P1811 code... Yonkerse 2000-2005 19 12-16-2010 11:30 AM
P1811! What to do?!? SapphireTorrent 2000-2005 17 02-20-2007 08:17 PM

obd2, obdii, p1811

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 02:31 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.