No acceleration

Tiny
CLUELESSATCARS
  • MEMBER
  • 2006 HYUNDAI
  • V6
  • AUTOMATIC
  • 86,766 MILES
I started my Sonata yesterday morning started fine worked fine. Got down the road less than a mile then all of a sudden it would not accelerate, no rpm, I pressed down on the gas all the way nothing just went down to a crawl. I limped it back home at less than twenty mph. Turned off the car then restarted it it worked fine got to work on time did not think much of it cause it did not do it again all day. This morning the same exact thing happened. Any help or advice would be appreciated. Thanks! P.S. I guess I should note that I started and drove it fine several times between both incidents and this morning I got to work fine once I got home and restarted the car.
Tuesday, April 11th, 2017 AT 7:42 AM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
Hello,

Your car is going into limp mode meaning there is something wrong with one of the systems, you must first read the codes to see what codes come up then we can go from there to get the problem fixed.

Here is a guide to get you started.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run this test and get back to us so we can continue helping you.

Best, Ken

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Thursday, April 13th, 2017 AT 12:17 PM
Tiny
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I took it in and here are the codes I got back

Error Codes Read
P0051 OHO2S Heater Circuit Low (Bank 2/Sensor 1)
P2106 Limp Home Value Malfunction
P1295 Electronic Throttle Control (ETC) System Malfunction- Power Management
P2135 Accelerator Position Sensor 2 Range/Performance
P161B PCM Internal Error- Torque Calculating
P0051 OHO2S Heater Circuit Low (Bank 2/Sensor 1)
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Tuesday, April 18th, 2017 AT 8:53 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
Hmmm got a few codes there. The one I don't like to see is the P161B PCM error which could be causing all of your other problems.

Be sure to check all of the fuses using a test light.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

I would also try clearing the codes then disconnecting the negative side of the battery for 20 minutes and then reconnect it to reboot the system. If it runs okay drive the car and recheck the codes. There is an ATM relay and a engine control relay that should be checked as well.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please let us know what happens.

Best, Ken

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Tuesday, April 18th, 2017 AT 8:41 PM
Tiny
CLUELESSATCARS
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I did all that this past weekend and started up the car this morning and unfortunately still having the same issues.
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Monday, April 24th, 2017 AT 6:14 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Recheck the codes and see what comes up. Some are secondary codes resulting from an initial code and after resseting, the primary code should come up first. Based on the codes you have provided, the following should be the main concern.

P1295 Electronic Throttle Control (ETC) System Malfunction- Power Management
P2135 Accelerator Position Sensor 2 Range/Performance
P161B PCM Internal Error- Torque Calculating
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Monday, April 24th, 2017 AT 7:48 AM
Tiny
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After clearing the codes the one on the top came up pretty much right away after starting the car the others did not come up until the incident occurred again
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Saturday, April 29th, 2017 AT 2:03 PM
Tiny
KEN L
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Okay that shows the o2 sensor as being bad. Lets try replacing it first, but before you do please recheck all fuses. Here are two guide that will help you. It is the bank 2 position 1 sensor which is in front of the catalytic converter opposite side of the #1 cylinder bank. Then clear the codes

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Please let us know what happens.

Cheers, Ken
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Monday, May 1st, 2017 AT 1:34 PM
Tiny
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SOLVED: I broke down and went ahead and took to the Hyundai dealer. Turns out it was the accelerator sensor. I get the car back later this week so we will see if I have anymore issues thanks for the help.
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Tuesday, May 2nd, 2017 AT 1:23 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help

Cheers, Ken
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Wednesday, May 3rd, 2017 AT 11:22 AM

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