Super weird!
Thread Starter
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Three Wheeling
Joined: Feb 2024
Posts: 65
Likes: 3
From: Everywhere; Nowhere.
Why are there so many responses on this and nothing on my Automated Corner Enhancement System pipe.
It's a O2 sensors. Unscrew the plugs, undo the clips .. install the new sensors .. clear the codes .. .its routine plug play job. 20 minutes tops. It's one of the easiest parts you can fix. Maybe only the Master Airflow Meter is easier..
You bought a Dud. Sorry. Buy another. Chances are it will work. That's life after 2020. Things have changed. I got 2 Crank Position Sensors that failed after 500 miles.
For O2's Some say walkers are best. I only use Bosch.
It's a O2 sensors. Unscrew the plugs, undo the clips .. install the new sensors .. clear the codes .. .its routine plug play job. 20 minutes tops. It's one of the easiest parts you can fix. Maybe only the Master Airflow Meter is easier..
You bought a Dud. Sorry. Buy another. Chances are it will work. That's life after 2020. Things have changed. I got 2 Crank Position Sensors that failed after 500 miles.
For O2's Some say walkers are best. I only use Bosch.
It's totally possible I got a bgotone out of the box, but it is odd that the previous one failed so suddenly, after being solid for roughly 100 miles.
So, imagine everything being great, then a new part suddenly fails, then the new part to replace the new part is also bad.....
That'd just weird. Might just be bad luck. Maybe not.
A spare ecu is good for testing and sometimes they are bad. Easier to swap ecu to confirm bad wiring than dig through wiring harness. Recently had my 52k mile truck throwing P1552 code. Tested multiple IAC valves, all same results. Traced wiring without finding anything wrong. Swapped ecu and problem is gone. Spare used ecu combo from ebay or breaker is not that expensive.
Thread Starter
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Three Wheeling
Joined: Feb 2024
Posts: 65
Likes: 3
From: Everywhere; Nowhere.
A spare ecu is good for testing and sometimes they are bad. Easier to swap ecu to confirm bad wiring than dig through wiring harness. Recently had my 52k mile truck throwing P1552 code. Tested multiple IAC valves, all same results. Traced wiring without finding anything wrong. Swapped ecu and problem is gone. Spare used ecu combo from ebay or breaker is not that expensive.
Silly question, but does the key have to be programmed to the ecu? Or is that something else?
TReK
Joined: Sep 2020
Posts: 2,960
Likes: 755
From: British Columbia Canada
The ECU doesn’t care, but if you’re replacing all 3 units, the BCU cares if you want your fob to work. You can program it with a Nanocom.
Programmed to BCU, so yes needs to be reprogrammed if you change the BCU.
Camel Trophy
Joined: Nov 2015
Posts: 3,560
Likes: 834
From: Staten Island, NY
Only if you want to be able to use the fob to disable the alarm. If it's just a temporary situation and you're happy using the key to lock/unlock the driver's door, you don't need to program the BCU to get the truck to run.
Thread Starter
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Three Wheeling
Joined: Feb 2024
Posts: 65
Likes: 3
From: Everywhere; Nowhere.
Update to the issue.
Ordered a new Denso o2 sensor, and installed it. It was looking all good. Cleared the previous o2 sensor code, and then watched live data, only to see b1s1 voltage stop dropping. Short term fuel trim is fine, at a flat 0% so...I'm just confused.
Link to video.
Ordered a new Denso o2 sensor, and installed it. It was looking all good. Cleared the previous o2 sensor code, and then watched live data, only to see b1s1 voltage stop dropping. Short term fuel trim is fine, at a flat 0% so...I'm just confused.
Link to video.
If it was mine I would start by swapping the 02's left to right and see if it follows the sensor.
Thread Starter
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Three Wheeling
Joined: Feb 2024
Posts: 65
Likes: 3
From: Everywhere; Nowhere.
Generally digital voltage outputs tell you very little about 02 operation, you need a scanner that can output an analog graph. The free torque app for android connected to an ELM327 bluetooth reader does it very well as I demo here: https://youtu.be/UNzi30G2_Kk
If it was mine I would start by swapping the 02's left to right and see if it follows the sensor.
If it was mine I would start by swapping the 02's left to right and see if it follows the sensor.
In the video, I show the graph. It starts fine, then just gradually declines, down to 0.000
This is my 3rd o2 sensor in this spot, that behaves the same way, in the last week. My short term fuel trims are all excellent, sitting right at 0. Truck seemingly runs fantastic.