P2138 And other Electronic Throttle body Codes ( Codes Explained )

[@josehenriquestchinguaki1570]

Brilliant way of explaining the solution...thanks.

[@darr2970]

I am wondering if a bad ECM would/could throw codes p2101, p2106, p2110, p2135, p2138. p2135 only showed up only a couple of times. The other 4 I listed are there every time as soon as the car starts. I have replaced everything that the shop diagnosed my car to have but all the new parts didn't fix the codes. Any help would be greatly appreciated. Thank You. Keep up the great work, very informative. 👍👍

[@45iveClips]

I replaced my pedal . My traction control goes off, reduce power comes on and the engine light does too. I can’t accelerate. P2138 p1125 . Buick lacrosse 2008 cxl 3.8l

[@3Wheels1Block]

Great info taking time to go over this is very helpful! The early generation drive by wire systems were sketchy from GM on the v-6 engines... my 01 v-6 Camaro would search at idle all the time and varied when cruising. And it did that without throwing a CEL... craziest thing I had ever seen....

[@SalemDoyle]

Most companies early versions were kindov bad. I remember how i hated that system when it first became popular because they all had such slow throttle response

[@hellhawk1023]

2014 Jeep wrangler JK. Just happened to me (p-2138).Truck didn't lose power, actually started accelerating on its own. Mechanic states my truck specifically has an issue with the computer communicating with the pedal and visa versa. Out being reprogrammed right now.

[@riverascleancutlawncare5279]

Same issue here. Did you fix it and if so how?

[@hellhawk1023]

@@riverascleancutlawncare5279 took it to a specialty mechanic by me. Found a short in a wire which fried the sensor in the pedal. He replaced the wire and the sensor then reprogrammed it to the computer

[@jerryllanders]

Do you have a part number for that wire harness?

[@taher1973]

Very informative. Thank you

[@dodgeking9194]

Good Job Nice clear understandable explanation I have a honda civic I gotta go check out tommorow

[@tamaramalone6924]

I'm just wondering if you can answer a question I'm really having a hard time getting my car fixed I put three different parts in by so-called makeshift mechanics and I'm asking is there a difference between a throttle pedal position Aor and a throttle position sensor A?

[@SalemDoyle]

Depends on the vehicle. But with drive by wire vehicles. There is usually a sensor a in the pedal and b in the throttle body. What problem is your car having?

[@Earl_Legacy]

2015 kia optima my car threw this code at first and then it went away. The other day it came back but i have 0 symptoms any suggestions thank you in advance

[@SalemDoyle]

May be the beginnings of a problem that hasnt gotten bad enough to cause issues yet. Might be worth it to clean the throttle body

[@Earl_Legacy]

@@SalemDoyle alrighty thank you 🤙🏽

[@martinhlee77]

The throttle valve (or butterfly valve), is it stay closed when the engine is not running? I found the valve is staying open when the engine is not running

[@SalemDoyle]

I think they default slightly open

[@janayecoleman2395]

What do you mean by run the code back through after you put the new throttle body on

[@SalemDoyle]

Reset, drive for a while and re check

[@Docucopy2006]

Can a flat battery throw this code? T31 Xtrail sat still for 5months, jump started, driven to mechanic for clutch replacement, jump started at mechanic & put battery on charge, vehicle collected and within 15mins of driving it had sluggish acceleration and throws P2138 code.

[@SalemDoyle]

The dead battery should have reset that code so if its coming back there is probably a problem.

[@84RX]

Just got this car and it throws 02138. Replaced gas pedal it wasn't the issue. Started up this morning and worked great on my way to work, no check engine light surprisingly. after work it came on again. Engine power low, stabiltrack, and traction. The issue is, the throttle body is really shiny and not gunky as far as I can tell, it looks like it was just replaced. Any suggestions? Could it be the pigtail connector to the tps?

[@SalemDoyle]

The pigtail is a possibility.

[@casanovauno]

I've replaced both throttle body sensor and accelerator pedal sensor. When I press on gas pedal, it does nothing. Any idea what is going on.

[@SalemDoyle]

Sounds like you will need to check the wiring

[@lukem8420]

I have a 2011 maxima, and i'm not getting any codes, but I will be driving normally, and all of a sudden I will get no acceleration or throttle response with with the pedal pressed down all the way. If i release the accelerator pedal and press it again, I will then get acceleration again. It happens intermittently while driving. I already had both the throttle body and pedal sensors replaced, with the same result. Any ideas on what would be the cause? Last thing I had done to the car was replace alternator.

[@SalemDoyle]

Check to see if there is a tbrottle relearn procedure that it needs to go through

[@lukem8420]

@@SalemDoyle Thank you i will try that, it surely cant hurt.

[@SJ_streetrider]

Hi... I m facing some issues in my car when i scanned my car these codes are showing P2127, P2122, P2138... is throttle pedal sensor problem or throttle body sensor problem??? plz help me out from this problem.... suddenly power of car decreases while running and after full pressing accelerator pedal it didnt go more than 3000rpm.. then after switching off and on ignition then it is normal working.

[@SalemDoyle]

this problem can be caused by problems with the pedal or the throttle body. your best bet it to have them both tested. or replace them as a set.

[@bigmob6813]

I have a 2003 Nissan maxima 3.5..Its only cranking not starting Im only getting the p2138 code Please help

[@SalemDoyle]

Could be a problem with the throttle body itself but also if it's cranking over and not starting you may also want to look at the crank sensor

[@debbiewood5553]

I have reduced engine power codes are P1125 P2138 P0116 and it says replace air injection pump

[@SalemDoyle]

Sounds like more than one problem, probably needs some more diagnosing

[@scratchgolfermd]

This has come on 3 times on my 2019 chevy Tahoe RST and $1000 each time it happens. When is a recall going to take place?

[@SalemDoyle]

Wow. Deff sounds like they need to issue one

[@domingocamberos862]

Would you say a drop in battery voltage to 10.7 volts would kick the 2138 code on a 2007 Cadillac CTS v6 2.8L?

[@SalemDoyle]

Possibly. That voltage is low enough to cause lotts of issues

[@jefe24k89]

Did you ever find out what caused the code on the cts?

[@wrapcityhqvicmelbourneaust6570]

Oh my god all I did was take the cover off to change a globe where my foot pedal is there's a cover I removed it underneath then that's stupid code comes on oh my god what the hell does that mean I didn't unplug anything anyway great video thank you

[@SalemDoyle]

The joys of computers

[@kenziemiller6348]

How do u do th throttle relearn I have a really good scan tool. I have 2005 Pontiac Grand Prix gtp supercharged and my supercharged is kicking in but it's Like the throttle fucks up.at a certain speed and then when I'm reading my Love data for the thrittl the car Will be Off and key turned on to on position but the throttle angel Will he anywhew from 4% to 22% and I only even have touched the pedal yet

[@SalemDoyle]

The re learn is a function that you have to use a higher in scanner for, I know the one that we had at the shop would do it, and of course the Tech2 will do it

[@kenziemiller6348]

@@SalemDoyle thanks for such a quick response super appreciate it is there anyway u can give me the angles and and all that that ur car is giving I'll send u a screenshot of my scan tool it's 50 bucks at Walmart best 50 I've ever spent and it's an app to ur phone the autel hyper tough ht200

[@SalemDoyle]

The numbers can be slightly different from car to car, that's why the real learn is important, because no 2 cars are necessarily exactly the same

[@SalemDoyle]

Mostly come of the numbers on both sides just need to match, and you need to look for things like dead spots where it suddenly jumps to 0

[@mariosalomon9930]

What if you install new throttle body assembly and installed a new accelerator pedal position sensor with new pedal and the code comes back after a week?

[@SalemDoyle]

Probably needs the relearn procedure

[@shaynedumas4436]

OK I SEE... MY BAD SALEM

[@shaynedumas4436]

CAN YOU TELL MY WHY WHEN I SEE MY BOOST GAUGE GO UP IT TAKES A MINUET TO FEEL IT BOOST...LIKE YOU SEE THE BOOST BUT ITS A FEW SECONDS BEFORE YOU FEEL THE POWER? HELP BROTHER...YOU KNOW ME BY KNOW...SHAYNE FROM ARKANSAS...2006 GP GT SC...THANKS BROTHER

[@SalemDoyle]

From what i have seen, the boost gauge reads almost half way at a manifold pressure of 0. So it hasnt acctually made boost yet.

[@hamodyalfarsy5337]

Hello, I suffer from the code p2138, but I did not find the problem. I changed the throttle and the inner pedal and the code appears when the vehicle is running I have already checked the electrical connections and there is no problem. If the car turns off and restarts after two minutes, everything is back to normal. My car is GMC Yukon XL 2008 5.3L

[@SalemDoyle]

That could be a wiring problem. Did you do the throttle re learn?

[@hamodyalfarsy5337]

@@SalemDoyleI don't know, I hope you can tell me where the wires I we’ll changed the throttle 3 times

[@SalemDoyle]

I would ask a shop about doing a throttle relearn first. Wiring problems can be tricky to find

[@shaynedumas4436]

GOOD VIDEO BRO BUT YOU KNOW MINES NOT DRIVE BY WIRE...06..JS BUT GREAT INFO

[@SalemDoyle]

06 should still have an electric throttle body.

[@shaynedumas4436]

IT DOES BUT TO FEEL THE POWER THE IT SLOW ABOUT BOOSTING SO IM THINKING ITS THE VACUUM ACTUATOR, I REPLACED THE ELECTRONIC ACTUATOR BUT THE MECHANICAL IM GUESSING IS BAD, THOUGHT YOU MAY HAVE EXPERIENCED IT BEFORE ON THESE OLD CARS BRO...THANK YOU THO

[@SalemDoyle]

There is some adjustment where the vaccum valve bolts to the supercharger also

[@shaynedumas4436]

THANKS GP BROTHER

[@shaynedumas4436]

THANKS BRO

[@motomark9736]

2005 Grand Prix runs fine until I mash pedal hard then reduce engine power comes on if I drive it easy accelerate gently it's fine if I floor it does it again . Is that pedal or the TB causing it ??? Please help

[@SalemDoyle]

Could be either i would suspect the pedal

[@motomark9736]

Thanks for the reply I bought this Grand Prix GT for my 16 year old his birthday was yesterday . It's has only 67,000 miles on it a family member had a stroke 3 years ago and the car sat for 3 years until I bought it and it was running fine changed oil and put gas in it flushed cooling system it was running great until I floored it then the reduced power came on and engine light let it set and it drove fine again until mashing the pedal then same thing if I drive easy it doesn't happen . I unhooked battery reset the light drives fine until I get on it . I cleaned the throttle body it wasn't really dirty . I think it might be the pedal assembly . Because it only happens if I drive it and floor it a little hard I don't want my son getting hit because the car lost power on acceleration pulling out into traffic that's when it does it

[@motomark9736]

@@SalemDoyleby the way it's an 2005 Grand Prix GT I haven't put it on a computer yet to see what code comes on I'm just guessing at this point but the way it acts I suspect it's the pedal

[@motomark9736]

This morning I cleaned out the air box put in a new air filter and reset it again it's been running right all day so far no engine light or reduced power hope it's fixed knock on wood

[@jaredthisdelle5617]

Right on man gd info

[@SalemDoyle]

Thanks

[@tomjacka7401]

having no cable also means a hacker can take over control of your gas pedal.pretty soon cars are going to come with a firewall.

[@SalemDoyle]

That wouldnt surprise me.

[@norbertoespinoza5158]

Cars do come with firewall

[@12343477]

I have a 2001 grand prix gtp and I'm only getting 5.6 mpg any ideal why

[@SalemDoyle]

Wow, sounds like it is running really rich. Does it run rough or have any other problems?

[@12343477]

@@SalemDoyle no it actually runs good no codes have came up I did notice it idles around 1000 to 1300 rpmis the a lil to high

[@SalemDoyle]

True. I would try to get a scanner on it and look at the live data and see if anything looks odd.

[@12343477]

@@SalemDoyle thank you for always responding

[@SalemDoyle]

No problem.