Ugghh...several issues and trying to use code reader. Help.

[yukon06]

Hi guys,
2006 yukon.
Engine light on. Truck started running rough. Oil was low but its been low before and did not run rough.
I had someone tell me sometimes when oil goes low the engine will run rough though he is a bit of a guesser and I dont know if he is correct all I know is the oil has been low before and did not run rough, so maybe this time is a coincidence and running rough is a different issue.
Oil is back to normal now.
I am disabled so its a bit hard for me to keep track of things thats why it ran low but as i said its back to normal and truck still running rough.
In addition to running rough I have had the traction control sensor issue that been happening long before this.

I purchased a code reader so I could figure out 2 things:
1. What is making it run rough
2. Which sensor is the issue

The code reader just keeps telling me to make sure key is on and that the reader is securely plugged in to the port, it doesnt tell me any codes.
I get a "vehicle fails to respond" message.
The reader does tell me voltage is 14.2 or so so that means the fuses are good and rules out a couple of other things, I think.

My primary question is has anyone had this issue with a code reader and what can i do about it to make some progress here?

code reader pic and link attached

Google Search

 

[Joseph Garcia]

Geezzz.... Sorry to read this, Man, but I cannot personally help you. I cannot see a specific brand or model number of you scanner, so if you can provide that, other folks on this Forum may well have the same or a similar scanner, and they will be able to provide you with some assistance.

 

[yukon06]

Geezzz.... Sorry to read this, Man, but I cannot personally help you. I cannot see a specific brand or model number of you scanner, so if you can provide that, other folks on this Forum may well have the same or a similar scanner, and they will be able to provide you with some assistance.

Google Search

 

[Joseph Garcia]

Google Search

Great! Why don't you edit/add this info to your original post, so that we know when we first read it, as it is very difficult (for me) to see in your photo of the scanner.

 

[yukon06]

Great! Why don't you edit/add this info to your original post, so that we know when we first read it, as it is very difficult (for me) to see in your photo of the scanner.

ok done, thanks

 

[Fless]

Try a few of the tips here: https://cartipsdaily.com/obd-has-power-but-no-communication

 

[yukon06]

Try a few of the tips here: https://cartipsdaily.com/obd-has-power-but-no-communication

will do thanks

 

[grouch]

Hi guys,
2006 yukon.
Engine light on. Truck started running rough. Oil was low but its been low before and did not run rough.
I had someone tell me sometimes when oil goes low the engine will run rough though he is a bit of a guesser and I dont know if he is correct all I know is the oil has been low before and did not run rough, so maybe this time is a coincidence and running rough is a different issue.
Oil is back to normal now.
I am disabled so its a bit hard for me to keep track of things thats why it ran low but as i said its back to normal and truck still running rough.
In addition to running rough I have had the traction control sensor issue that been happening long before this.

I purchased a code reader so I could figure out 2 things:
1. What is making it run rough
2. Which sensor is the issue

The code reader just keeps telling me to make sure key is on and that the reader is securely plugged in to the port, it doesnt tell me any codes.
I get a "vehicle fails to respond" message.
The reader does tell me voltage is 14.2 or so so that means the fuses are good and rules out a couple of other things, I think.

My primary question is has anyone had this issue with a code reader and what can i do about it to make some progress here?

code reader pic and link attached

Google Search

View attachment 470089

Generally, you want the ignition on, but the engine NOT running. With the "failure to respond" message, it's telling you the computer isn't talking to you.

 

[Doubeleive]

Hi guys,
2006 yukon.
Engine light on. Truck started running rough. Oil was low but its been low before and did not run rough.
I had someone tell me sometimes when oil goes low the engine will run rough though he is a bit of a guesser and I dont know if he is correct all I know is the oil has been low before and did not run rough, so maybe this time is a coincidence and running rough is a different issue.
Oil is back to normal now.
I am disabled so its a bit hard for me to keep track of things thats why it ran low but as i said its back to normal and truck still running rough.
In addition to running rough I have had the traction control sensor issue that been happening long before this.

I purchased a code reader so I could figure out 2 things:
1. What is making it run rough
2. Which sensor is the issue

The code reader just keeps telling me to make sure key is on and that the reader is securely plugged in to the port, it doesnt tell me any codes.
I get a "vehicle fails to respond" message.
The reader does tell me voltage is 14.2 or so so that means the fuses are good and rules out a couple of other things, I think.

My primary question is has anyone had this issue with a code reader and what can i do about it to make some progress here?

code reader pic and link attached

Google Search

View attachment 470089

check the cigarette power port fuse, if that fuse is out there will be no obd communication, the obd port will still have power but no communication.
that is what causes that issue.
also if the oil is getting low it is either burning it or leaking out
if it is burning it then what typically happens is the plugs can get fouled and then the chain reaction is a misfire i.e running rough.
just something to look for, doesn't mean that is the problem but it is one thing to check out in the process.

 

[yukon06]

check the cigarette power port fuse, if that fuse is out there will be no obd communication, the obd port will still have power but no communication.
that is what causes that issue.
also if the oil is getting low it is either burning it or leaking out
if it is burning it then what typically happens is the plugs can get fouled and then the chain reaction is a misfire i.e running rough.
just something to look for, doesn't mean that is the problem but it is one thing to check out in the process.

This makes the most sense, thank you...
For the lighter fuse, i didnt check because i have oneof these plugged in and it tells me the voltage so its working. I will check plugs

https://www.amazon.com/dp/B0DG2TQ4R9?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1&th=1

 

[Doubeleive]

This makes the most sense, thank you...
For the lighter fuse, i didnt check because i have oneof these plugged in and it tells me the voltage so its working. I will check plugs

https://www.amazon.com/dp/B0DG2TQ4R9?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1&th=1

check all your aux pwr fuses anyway

 

[RET423]

There's more than 1 fuse to the accessory/cigarette lighter ports, they don't all draw from the same fuse; but one of those ports has its fuse wired as double duty to power the OBD port; that fuse being bad is almost always the cause of a reader not able to connect to the vehicle

 

[yukon06]

Thank you guys, but I just checked the fuses and they’re both good
I’m not sure what you mean by there’s multiple fuses, I tested too under the hood and if you look at the attached diagram, it’s a cigarette lighter circuit and the auxiliary circuit both towards the right side

 

[yukon06]

Update
Checked all the fuses and we’re good. The code reader wasn’t working so I didn’t know if I had a bad unit or if my port was bad.
I brought truck to AutoZone and they use their reader which worked so that means my port is good, but my reader is bad.
Came back with a code 0300 and to clean the injectors.
I had already run two bottles of gas treatment through it and did not help so I bought spark plugs hoping that is the solution. They need to be replaced anyway.
When we ran it through the reader at AutoZone, that was the only thing that came up. I am having the traction control issues, I was hoping that would come up and it would tell me which one, but I guess that was asking too much.

I’ll post this here, but I may wind up making a new post. Is there any easy way to figure out which traction control sensor may be causing an issue? I can no longer really do stuff like this. I am disabled so the easiest solution is what I’m looking for.
Thanks for the help guys

 

[6speedblazer]

P0300 can cause traction control issues. So I would start with that code first.

I like my topscan dongle by topdon. i have not tried it to see if it will read misfire codes or not, but its done all the weird stuff i have needed it for and its only 50ish bucks on amazon.

 

[RET423]

This is entirely anecdotal, I use a good scanner before I start changing parts & I advise that to everyone

I have found that usually a traction control error without an ABS error is often the steering column centering sensor having a loose plug or corroded terminals; if the ABS light is on as well as the traction control error its about a 50/50 scenario between cold solder joints in the ABS control head or a failing wheel speed sensors

But I wouldn't guess & start buying parts, I wouldn't replace all your plugs chasing that P0300 code either without something specific to cause me to think the plugs are an issue

The more modern junk parts you install in place of good parts that weren't failing, the more difficult it will be later to narrow down the issue, sometimes the throwing darts method works but more often it just introduces more variables to complicate a proper diagnosis later

 

[yukon06]

This is entirely anecdotal, I use a good scanner before I start changing parts & I advise that to everyone

I have found that usually a traction control error without an ABS error is often the steering column centering sensor having a loose plug or corroded terminals; if the ABS light is on as well as the traction control error its about a 50/50 scenario between cold solder joints in the ABS control head or a failing wheel speed sensors

But I wouldn't guess & start buying parts, I wouldn't replace all your plugs chasing that P0300 code either without something specific to cause me to think the plugs are an issue

The more modern junk parts you install in place of good parts that weren't failing, the more difficult it will be later to narrow down the issue, sometimes the throwing darts method works but more often it just introduces more variables to complicate a proper diagnosis later

Would the steering sensor you mention cause the “traction control” warning to display on the dash as mine does and when that happens i lose power and the ability to accelerate?

 

[RET423]

I've never seen a steering wheel position sensor issue derate an engine, but that doesn't mean some engineer hasn't decided to add that functionality to the code after some specific year

A failing electronic throttle control component seems like a more likely scenario but it would throw a specific OBD code for that error

 

[yukon06]

I've never seen a steering wheel position sensor issue derate an engine, but that doesn't mean some engineer hasn't decided to add that functionality to the code after some specific year

A failing electronic throttle control component seems like a more likely scenario but it would throw a specific OBD code for that error

So then why wouldnt i think that its actually the traction control sensor which shows those words exactly on the dashboard and its a known issue?
Im not trying to be argumentative it just seems black and white.

On the spark plug issue why the truck is running rough, they are long overdue to be changed.
It makes sense why they may be fouled and worth doing.
I haven’t had the money to do
Them as i was in a 3 year divorce battle from a narcissist, i went through my savings while trying to get some of my money back and i lost my business in 2020 since i am disabled and dont have anything coming in.
I am treading water while waiting to get a little bit since the divorce finally ended but thats why i havent been able to do much with the truck so changing the plugs is what i have to try and do, theyre long overdue.

I appreciate the info

 

[RET423]

A traction control message is telling you that the computer sees a malfunction somewhere in the traction control system; so it turned off the system & informs the driver that the system needs repair to resume working

The traction control system utilizes many sensors to work, the VSS the ABS wheel speed sensors, the ABS control module, the steering wheel position sensor & others

The specific condition that caused the traction control system to turn off is sometimes a component that is individually monitored by the ECM as it serves other functions in addition to the traction control system; in those cases the traction control message will come on simultaneously with a check engine light or the ABS light depending on the component that is preventing the traction control from working

In all cases your dash information is telling you that a system is not functioning as designed, all of the vehicles systems have multiple failure points so seeing the same message on 10 different cars doesn't mean all 10 had the same component failure; it only means all 10 have a problem in the same system

Think of like the plumbing in your house, if you and your neighbor both have a leak flood your house it doesn't mean you both had the same pipe or faucet fail in the same way; his could be in the utility room & yours in the bathroom, you both have an issue in the plumbing system that presents in the same result of a flooded house but you both don't need the same repair to get the system working right again