P 0740 transmission code - JeepForum.com
LinkBack Thread Tools
post #1 of 3 Old 12-20-2013, 12:16 PM Thread Starter
Registered User
2002 WJ 
Join Date: Apr 2011
Location: Bakersfield
Posts: 308
Wj P 0740 transmission code

Just the other day on the highway my jeep decided to turn on the check engine light.

Checked the odometer code, got a p 0700, so I took it to get the codes read and discovered its a p 0740 which is a torque converter lockup malfunction code. The ODB II meter also said it was an open circuit.

I have no huge symptoms other than the transmission not shifting all the way into overdrive sometimes, or taking a long time to shift into overdrive.

Transmission fluid level is good, and it doesn't smell burnt.

What are some easy things to check first?

My Build Thread for the old WJ
justn is offline  
Sponsored Links
post #2 of 3 Old 12-22-2013, 08:36 PM
Registered User
2001 WJ 
Join Date: Nov 2013
Location: Provo
Posts: 95
check the transmission relay and make sure it works properly
link375 is offline  
post #3 of 3 Old 12-23-2013, 09:01 AM
Double E
Web Wheeler
Double E's Avatar
2000 WJ 
Join Date: Oct 2003
Location: Raleigh, NC
Posts: 5,274
Test your input sensors: http://www.jeepforum.com/forum/f13/s...ailure-561977/

'04 Freedom Edition HO & '04 Overland HO (previous '00 Laredo 4.7)
Double E is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome