P2100 code - Electronic Throttle Control and ESP Lights - Page 4 - JeepForum.com
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post #46 of 57 Old 07-30-2015, 11:30 AM
proto57
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Originally Posted by eze07mayhem View Post
Have you had any luck with the throttle body proto57?
Yes... and sorry again, I meant to post the results. The new throttle body was exactly the same as the old one... all casting marks, machining marks, and so on... in other words, the warnings I got from some dealerships that one at that price would not be genuine Mopar were wrong... this is the same one put on my "world engine" from the factory. That is, other dealerships wanted $286 and above for the same exact part, a good $116 more than the ones you see at Amazon and elsewhere.

Then it went in just fine. No need to remove that bracket on two of the bolts: Although the manifold has a locator pin, it is short, and you can lift up against the loose bracket after taking out the four bolts of the TB alone, then slide it out.

And about programming: There are those who have said this is not "plug and play", and have brought the Jeep to a dealership to have it "programmed". This may be possible, but it is unnecessary. From reading about this, and confirmed by the parts department where I picked this up, you only have to turn the key to ignition (without starting it), then slowly press the throttle to the floor, taking 15 seconds at least. Then you slowly let it up, taking another 15 seconds. This apparently teaches the computer what the range of throttle motion in your new throttle body is, and the relationship with the range of the pedal. I had no problem at all with it. I've also heard that it will learn from your habits over time... but that this gets you started. And I have to say the throttle response is excellent, acceleration noticeably smoother. I'll guess the old worn gears were allowing some throttle plate motion or vibration or something, which I had gotten used to.

Well one thing to mention: The red throttle body failure light came on briefly, and stayed on for a few minutes of driving. I'm guessing the computer needed to erase that code on its own, when it was happy it was working correctly.

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post #47 of 57 Old 08-03-2015, 10:05 AM
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Ok… Well, I Reset the ECU. I tried both ways to make sure I was doing it correctly. It definitely started smoother as if it didn't realize there was a problem, but it didn't take long for the idle to become rough and go through the same motions again… ESP light and limp mode. I tried driving it around the block to see if it would sync whatever is out of whack, but no dice. I'm stumped. I'm going to sleep on it and try something else tomorrow. Might have to drive it slowly to the shop and let them hook it up to the computer, but at least now I can drive it there. Before it was too rough. I have a transaxle leak. I'm curious if anyone would know if low fluid level would trigger the ESP and put it into limp mode??
Hello joooblooo,

Thank you for reaching out. I am sorry to hear about your recent troubles with your Jeep. Have you had the vehicle serviced at an FCA dealer yet? If not, would you like assistance with setting up an appointment?

Ryan- Jeep Social Care Specialist
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post #48 of 57 Old 08-18-2015, 01:11 PM
07UX
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07ux

Just wanted to let you all know that I was having the same problem as mentioned here in previous posts. Put a new ETC on and no help. ($143.00). Read this forum, bought a new battery...fixed. Thanks forum.
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post #49 of 57 Old 08-18-2015, 04:39 PM
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Is that why my Patriot is jerking and not accelerating?
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post #50 of 57 Old 10-24-2016, 09:11 AM
Brandy2009
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ETC & ESP Indicator's on 2009 Jeep Patriot

I have a 2009 Jeep Patriot that has stated bucking while acclerating from a stop as if its trying to shift but can't. While my jeep is bucking the ETC light always comes on then followed by the ESP light. I have to pull over to a stop and then it seems fine again or I stall out and start the jeep up and it seems fine. Sometimes this happens a couple times during the week while other weeks nothing happens and the Jeep seems fine. Today this happened but while I was driving going about 35 MPH and the both the light indicator's came on.

I have read many forums that people have taken their jeeps into the dealership to pay vast amounts of money on parts and get no solution with this reoccuring issue. Anyone have any idea's I could try before taking it to the dealership?
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post #51 of 57 Old 10-25-2016, 08:48 AM
proto57
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I have a 2009 Jeep Patriot that has stated bucking while acclerating from a stop as if its trying to shift but can't. While my jeep is bucking the ETC light always comes on then followed by the ESP light. I have to pull over to a stop and then it seems fine again or I stall out and start the jeep up and it seems fine. Sometimes this happens a couple times during the week while other weeks nothing happens and the Jeep seems fine. Today this happened but while I was driving going about 35 MPH and the both the light indicator's came on.

I have read many forums that people have taken their jeeps into the dealership to pay vast amounts of money on parts and get no solution with this reoccuring issue. Anyone have any idea's I could try before taking it to the dealership?
Brandy, no guarentees, but that sounds like your Electronic Throttle Body is failing. When you press your throttle, there is an electric connection to the ETB. In that unit, which is on your intake manifold, there is a motor and a set of gears. They open the throttle "butterfly" valve "for you".

On my Patriot, the gears in this unit were stripping... that is, teeth were worn down to the point that they would sometimes slip. This means that the throttle will not open fully, or at all at times, and you will get the symptoms you describe... bucking, intermittently OK, etc. Sometimes it works, because sometimes they might not slip.

Anyway, replacing it yourself, or by someone moderately knowledgeable in car repair, is totally doable. And the part is only $133 now. I think anyone who replaces plugs and an air cleaner, with a regular socket set, would be up to the task. Here is the part on Amazon:

https://www.amazon.com/GooDeal-Throt...qid=1477406396

You really can't go wrong if you have over 80k on the odometer... many of these will fail around 100k anyway, so if I were starting over with a new Patriot, I'll pop on on at 80k.
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post #52 of 57 Old 11-04-2016, 01:35 PM
Brandy2009
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Proto57, Thanks for your help! I replaced the Electronic Throttle Control and seems to be working normal again and been a week and haven't experienced any bucking or stalling.
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post #53 of 57 Old 11-18-2016, 11:46 AM
androidm
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My ETC light came on periodically on my 2009 Compass, so I took off the throttle body, cleaned it, and reinstalled. NOW IT WONT TURN ON AT ALL. Turning the key just lights the ETC light, it doesn't even try to crank. Please help.

2009 Compass Sport, 2.4L DOHC I-4 (Hyundai ED3), FWD, 6-spd Jatco JF011E auto CVT w/OD & AutoStick
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post #54 of 57 Old 04-13-2017, 07:46 AM
Marshmallo
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Same Problem 2011 Jeep Compass

I'm having the same issue as everyone else here, error code p2100, etc light comes on while driving. the light will go off if I let off the gas, when the light goes away I can resume driving as normal. my question is should I take this to a mechanic to do a diagnosis to be absolutely sure this is the issue? or just go ahead and install a new throttle body? seems to be fairly common, but a mechanic has told me there are also issue with the throttle position sensor in these vehicles that cause the same effects.
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post #55 of 57 Old 01-26-2018, 06:22 AM
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Recurring issue with Patriots and Compass. They are a TON of people with this problem. Bringing it to the dealer won't help. ----- Jeep Cares - what's the solution?! ----
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post #56 of 57 Old 01-26-2018, 09:47 AM
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Recurring issue with Patriots and Compass. They are a TON of people with this problem. Bringing it to the dealer won't help. ----- Jeep Cares - what's the solution?! ----
Hi BLACKMATTER,

We are not mechanically trained and rely on our dealerships to perform offcial diagnostics on our customer's vehicles. If you are expereicning this concern and decide to visit a certfied dealership please send us a PM wtih your VIN for furher assistance if needed.

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post #57 of 57 Old 03-29-2021, 03:16 AM
freezerwarrior
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i have the same problem with my 2015 Jeep Patriot ive taken it to the mechanic and had the whole throttle body replaced and this still hasnt fixed the problem
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