o2 Sensor Issue - TundraTalk.net - Toyota Tundra Discussion Forum
User Tag List

 
LinkBack Thread Tools
#1 (permalink) Old 12-01-2012, 09:08 PM
Junior Member
 
Join Date: Dec 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
o2 Sensor Issue

2003 Tundra 4.7 motor 72,000miles. Check engine light came on, catalytic converter was the problem. installed an after market converter, drove it for approximately 500 miles when the check engine light returned, this time it was the o2 sensor on the discharge side of the recently installed converter. OK, not uncommon the failed converter caused the sensor to go. Replaced the o2 sensor and drove it 20 miles and the light has returned with the same fault code telling me the same sensor has failed. Is it possible that an after market converter would cause the problem or do I actually have a new faulty o2 sensor ? Any input would be appreciated. Thanks

TedS03 is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 12-01-2012, 09:37 PM
Senior Member
Premium Member
 
NightRodeo's Avatar
 
Join Date: Aug 2012
Location: Stephenville, TX
Posts: 835
Thanks: 1,120
Thanked 1,263 Times in 622 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Some times if an o2 sensor goes, the o2 sensor fuse will go out also and that can cause the check engine light to come back on. Places like auto zone will only show the o2 sensor as bad on there tester. It wont pick up the fuse being bad or out. Usually a dealership or a reputable mechanic shop can check with a real diagnostic computer to see if the fuse is what is bad. Some times the o2 sensor can be faulty even when new. If you know some one that can check with a real diagnostic computer and not charge you or not charge you a lot they can tell you for sure what the problem is.

My boots are broken and my brain is sore
Memory lane up in the head lights
She wrote "call me" in the dirt on the hood of my truck
NightRodeo is offline  
#3 (permalink) Old 12-01-2012, 11:07 PM
Junior Member
 
Join Date: Dec 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Where is the fuse located ?
TedS03 is offline  
#4 (permalink) Old 12-01-2012, 11:09 PM
Senior Member
Premium Member
 
NightRodeo's Avatar
 
Join Date: Aug 2012
Location: Stephenville, TX
Posts: 835
Thanks: 1,120
Thanked 1,263 Times in 622 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
It is usually located in the fuse box under the hood

My boots are broken and my brain is sore
Memory lane up in the head lights
She wrote "call me" in the dirt on the hood of my truck
NightRodeo is offline  
#5 (permalink) Old 12-01-2012, 11:42 PM
Junior Member
 
Join Date: Dec 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
I did not realise there was a fuse for the sensor. I will check into this a let you know how i faired. Seems like it could be a simple fix. Thanks for your help.
TedS03 is offline  
#6 (permalink) Old 12-03-2012, 10:07 AM
Junior Member
 
Join Date: Dec 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
All the fuses tested fine. When I started the truck up the check engine light never came on (and I did not reset it either). I used it to do some running and it never came back on. I don't know what to think.
Thanks for your help NightRodeo.
TedS03 is offline  
#7 (permalink) Old 12-03-2012, 05:05 PM
Senior Member
Premium Member
 
NightRodeo's Avatar
 
Join Date: Aug 2012
Location: Stephenville, TX
Posts: 835
Thanks: 1,120
Thanked 1,263 Times in 622 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Your welcome. Some times the check engine light can be weird like that. It may have just needed some time to reset. It can be hard to determine some times.

My boots are broken and my brain is sore
Memory lane up in the head lights
She wrote "call me" in the dirt on the hood of my truck
NightRodeo is offline  
Reply

  TundraTalk.net - Toyota Tundra Discussion Forum > Tundra Discussion > Tundra Problems: Maintenance, Repair & Dealer/Warranty Issues

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the TundraTalk.net - Toyota Tundra Discussion Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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 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 On
Pingbacks are On
Refbacks are On

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