P2135-TPS sensor issue-08 aveo

So CEL comes on for a day, I go to Autozone and they tell me it's a code P2135. This is what the definition says:

Definition:
Throttle position sensor (TPS) 1-2 correlation
Explanation:
The ECM has detected that TPS 1 and TPS 2 disagree more than 4.5 percent for less than 1 second
Probably Cause:
1. Poor electrical connection
2. Failed TPS

CEL went off right after the guy finding the code for me and hasn't returned again in a week. I haven't noticed any issues with the car except some mornings when I'm first pushing on the gas it has a little hesitation but once I'm on the road I have no problems at all with accelerating after stop lights or anything, it's fine while idling, and no stalls.

My question is...will this problem continue to get worse or cause damage somewhere else? Also, the guy said something about cleaning the throttle body and sensor, How do you do this?

Thanks!

I have an '08 as well with this issue. I notice that nobody has replied to the previous post. I understand the code will come back, as has been the case with my car. I intend to take out the throttle body (see pic) and clean it with TB Cleaner from Canadian Tire.

Does anyone know if the sensor on this throttle body can be replaced? The dealer says the only part they can order is the whole body with new sensors. In Canada, that will be approximately $500 to purchase and $200 in labour.

I have seen videos on YouTube that show sensors can be ordered and replaced without the whole body being replaced. The video link below shows the procedure for a Chev truck, not aveo.
https://www.bing.com/videos/search?q...42B&FORM=VIRE6

Any thoughts folks? Attachment 9960

You can't rely on doc for another vehicle, and even various years of the same model sometimes differ - as it does with Aveo throttle body. TPS for an '08 is built-in to the TB and cannot be replaced. First try removing the TPS sensor connector and cleaning both sides, along with carefully inspecting all of the wires coming into it. If that doesn't help, next try removing the TB and cleaning as you were planning to do. Lastly, never buy parts from a stealership unless there is no other choice (which is rarely the case). Rockauto is selling TBs for the '08 for $100-200 USD, and you could also consider getting one from a U-pull, if there are any available where you live.

Thanks AVGuy for that good advice. Supplementary question, if I may, Does the Aveo go into this so-called "limp" mode? And if so, under what conditions?

Hello. I took the wiring harness off the throttle body, inspected it for defective connections and wires, found none, and replaced the connectors and the problem has not returned.

Hello folks:
Well, the problem P2135 is back. I will take a look and let you all know if I fix it.

My 2009 went into limp and brought up the same code the other day. Then it drove fine. Then it went into limp mode again yesterday.

I have found 3 possible causes according to the good ol' www:
- bad wiring
- bad Throttle Position Sensor
- bad throttle body

Have you resolved yours yet Markstack?

Quote:

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Originally Posted by Markstack

Hello folks:
Well, the problem P2135 is back. I will take a look and let you all know if I fix it.

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My code went away by itself. It seems to come on from time to time and then go off. Car is running fine now.

I had this problem on my 2008 Aveo5. Had the throttle body replaced in March 2018. Got the CEL again on New year's eve, en route to work, and it was running sluggishly. After work, I go to Auto Zone, and sure enough, it's our old friend the throttle position sensor. Took it back to the shop today. Don't think it's supposed to fail again less than ten months after replacement

Hello CDreMatt: please let us know about your outcome with the shop. My Aveo is running fine and the code has not returned.

Quote:

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Originally Posted by cdrematt

I had this problem on my 2008 Aveo5. Had the throttle body replaced in March 2018. Got the CEL again on New year's eve, en route to work, and it was running sluggishly. After work, I go to Auto Zone, and sure enough, it's our old friend the throttle position sensor. Took it back to the shop today. Don't think it's supposed to fail again less than ten months after replacement

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The good news, it is not the throttle body sensor. The bad news, the problem seems to be intermittent, and the mechanic could not replicate it. Judging only by the error codes (Apparently, there were several) they think the problem is either the MAP sensor or the computer itself. They can't say for sure until they can examine it when the problem is happening, or immediately after. For now, they sent the car back and told me to drive on as normal (no charge for the visit)

I have the same problem with my 2009. I found a TPS at NAPA and will be replacing it today. (15 degrees!!)

Mine is a "comes and goes" type problem and can pull over for about 5 minutes and the car will be fine for awhile.

Sorry to say this but it looks like you need a new throttle body. Heat and cold play a big row when it comes to electronics, quick checks you can do is check for voltage signal and ground, if you have all three you need a new throttle body.

Update:
I retract my statements about the manual idle learn reset it only "worked" for one drive cycle. I would now say, bring your vehicle to a shop for scan tool computer program procedure called "IDLE LEARN RESET" Please be aware that messing with your throttle body comes with risks. If you decide you want to take it out and clean it I recommend you have a high end scan tool right there available or you might not be able to drive anymore. This video goes over the risks of removing your throttle body:
https://www.youtube.com/watch?v=7oIBGlJbZEc\

https://youtu.be/WyKmf2rDpW0

https://www.yourmechanic.com/article/p2135-obd-ii-trouble-code-throttle-pedal-position-sensor-switch-a-b-voltage-correlation-by-blake-griffin

Also I just recently got back the P0116 code for the coolant temperature sensor it apparently can cause a hard starting engine.
https://repairpal.com/obd-ii-code-p0116

Follow up on my last post. The light came on again, and I took it directly to the mechanic. They checked the codes and came up with a manifold air leak. Sure enough, there was a bad gasket on the intake manifold. So far, that repair has done the trick

This may seem a little odd, but it is my observation after doing the head gasket on an 08. My daughter's car was throwing the p2135 code for the tps in the throttle body. The car failed its head gasket so I focused on that and thought i would look at the throttle body later. Funny thing is now that the head gasket is fixed the engine no longer throws the p2135 code. It is possible that i jostled some wiring and that fixed the p2135 code but i would offer another observation. The throttle body is heated by a coolant line. Is it possible that the throttle body was not getting warm enough and this was mixing up the tps?

ChrisChattaway I had the P2135 code show up on my 2008 Aveo 5 a couple of times then the CEL went off. The P2135 code was still in the memory. I also cleared the code and it didn't come back for a month.

The P2135 code should be from an "electrical" value not meeting what is programed into the ECM. The code triggers when the electrical values are not met.

P2135 Meaning
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.


The throttle position sensor has the two sensors (sensor "A" and sensor "B"). These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

I never read where the coolant heating the throttle body changed an electrical value.

I did watch someone take apart their throttle body and examine the potentiometers under a microscope. The potentiometers fingers were made from very small wire and one finger had a slight defect that caused the P2135 code.