Dakota Forumz banner
21 - 40 of 47 Posts

·
Registered
Joined
·
27 Posts
Discussion Starter · #21 ·
Sent it to a shop to have the two (came with truck) 02 upper sensors replaced.
All was good for a few miles, then the light came on again. This time a new code PO154.
Took it back and he thinks it could be the ecm or other.
Note))) the lower 02's haven't been replaced yet, not sure how old they are.
He referred me to another diagnostic place that could get more in depth. Said it could be as simple as a broken wire or worse .
Hope I don't have to sell this truck.
Lets hear your input.
 

·
Registered
Joined
·
88 Posts
Sent it to a shop to have the two (came with truck) 02 upper sensors replaced.
All was good for a few miles, then the light came on again. This time a new code PO154.
Took it back and he thinks it could be the ecm or other.
Note))) the lower 02's haven't been replaced yet, not sure how old they are.
He referred me to another diagnostic place that could get more in depth. Said it could be as simple as a broken wire or worse .
Hope I don't have to sell this truck.
Lets hear your input.
Check this all out.
Dodge Dakota P0155: O2 Sensor – Heating Element Failed (Bank 2 – Sensor 1) | Drivetrain Resource
 

·
Registered
Joined
·
88 Posts
Are you sure the two sensors that came with the truck for the upper O2.
If they are in the wrong location they will most likely send a code.
 

·
Registered
Joined
·
88 Posts
And the code you are getting is for the passengers side located before the Converter.
I don’t think those O2 sensors are real expensive. I would leave the rear ones alone for now.
Change the Passenger front with a known new correct sensor.
If it trips a code again. Label the sensor you removed and save it.
Then look for other causes.
But..... If it works without tripping the code throw the removed sensor away. Far away.
This is all just a suggestion. You should be able to get under the truck and easily change it out since it has been recently replaced.
Just make sure it’s cooled down completely.
 

·
Registered
Joined
·
88 Posts
Also: while your under there check the wiring harness as far up as possible looking for burnt or rubbed wires that may be grounding out somewhere.
I doubt that is your problem tho.
Based on your comments you say when the code is cleared you have to drive it a while before the code appears.
If this is shortly after you start it and the code appears it may be a bad wire or plug. If it takes a while for the code to appear then it’s most likely the O2 sensor.
Please keep us informed on your findings.
 

·
Registered
Joined
·
27 Posts
Discussion Starter · #28 · (Edited)
Today I swapped out the upper pass side o2 sensor and drove it, then I had bucking at light throttle then a few miles later the light came back on but drove great. PO132 . I cleared it and drove home, didn't come back on yet.

Im guessing the new sensors the previous owner gave me were wrong cause it looked different than the one I put in.
Pic is the one I pulled out, looks skinnier.
3036


Looks like cheap Amazon parts after looking up the part numbers.
 

·
Registered
Joined
·
27 Posts
Discussion Starter · #30 ·
It's been a few days and so far no light.

Pic::;;New sensor at the bottom (cap next to) .

Maybe now I can start fixing the upholstery, since it's what I do for a living.
 

Attachments

·
Registered
Joined
·
27 Posts
Discussion Starter · #31 · (Edited)
Well no codes till this morning. The annoying evap code po455.
My wife's Liberty gets this every once in awhile. Cleared it.

Went to Napa and picked up some upper ball joints. There's a choice of $33, $89, $103. Stayed away from the cheapies and got the $89 units. Guy said they were good on his Durango.

Also pulling the driver's rear seat bottom to replace a panel (cigarette burn).

Parked my XJ next to the truck, they are both the same height and my XJ is lifted 3" . 😎
 

Attachments

·
Registered
Joined
·
27 Posts
Discussion Starter · #32 ·
Pics of the seats.
1.) Rear seat bottom burn on the side. Panel will be replaced. Already have material.
2.) Passenger side bottom cigarette burn. I can "burry it" in the seam. Sewing the seam in more will fix that.
3.) Drivers side needs some foam repair.
 

Attachments

·
Registered
Joined
·
189 Posts
Looks like you’re setting yourself up with a comfortable little Dak. Looks good and keep the updates coming!
 

·
Registered
2003 Dakota Sport, club cab, 3.9L V6, 5 speed manual
Joined
·
762 Posts
Po455 came back this morning 😔.
Any tips on what to look for ?
I've got a 2003 Dakota with the 3.9L V6, and have had that code a couple of times. I think the 4.7 had the same evap system in 2001. Look under the cab on the drivers side just behind the driver's door for the charcoal canister. It should have two U-shaped tubes connected to it. These two tubes get weathered, and will crack allowing a loss of vacuum when the evap system is being checked, causing the P0455 (or P0442 if it's just a very small crack). These tubes are easy to replace and cost less than $10 for a set. See the linked YouTube video regarding this code.P0455 Code
 

·
Registered
Joined
·
27 Posts
Discussion Starter · #37 ·
Great video. That kid sure is entertaining.
I'll be under the Dakota tonight where it's nice and peaceful. 😄
 
21 - 40 of 47 Posts
Top