I have a 2009 Wrangler Unlimited Sahara. The check engine light is on. I used the key sequence method and observed code P0300 at the odometer. Is there a key sequence method similar to displaying the codes that will clear the codes?

I know that AutoZone will let customers use the AutoZone scanner to clear codes. I know that disconnecting the battery will clear codes and result in a computer relearn.

The P0300 code is difficult to diagnose since it is a random misfire detection.

About 7 months ago I noticed excessive oil consumption (2 quarts in 900 miles). The dealer replaced the rings. My jeep had 55000 miles at the ring replacement.

I have put about 2700 miles on the Jeep since the rings where replaced. I suspect that the excessive oil consumption may have fouled the plugs causing the P0300 code.

Until I get the P0300 cause determined I would like to reset the code in my garage without disconnecting the battery and without buying a scanner. If a key sequence code reset method is not possible please let me know. I plan to use a fuel additive to clean the injectors, plugs and valves then reset the code and see if it reappears. I also plan to visit the dealer for their opinion.

If a key sequence code reset method is not possible then I will buy a scanner.

Thanks for your help.

jk144

 

I don't believe that you can reset the code through a key sequence. You may be able to pull a fuse (In the Neon we use to pull the fuel pump fuse and that reset the computer) and have the computer reset.
A cheap scanner is a good idea anyway. I've got a number of bluetooth ones that I use with my vehicles as well as friends. (Old Bluetooth Android or iOS phones work great in conjunction with the scanner.)

I've seen bluetooth scanners for as little as $15-25 online.

 

Million dollar idea for some one!! Create a smart phone app that is a Bluetooth scanner!!

 

It's called Torque. Works great

 

Yep, torque is awesome. Can keep a eye on temps and reset codes.
Most programmers let you reset also.

 

So does the Torque paid version now display transmission temp?

 

It's in the paid version but you have to create 2 new PID's in settings.

 

Thank you sir. OK to PM you to get help setting that up?

 

Sure, was actually loading up some pics of screen.

 

Does the torque scanner work with iPhone? I was reading one of the descriptions on eBay and it read not compatible with apple products. Just wondering if it meant the computer software. Thanks