tbssubaru Posted November 26, 2010 Share Posted November 26, 2010 Recently my 2005 LGT started throwing the CEL and going into limp mode. It can happen just happily cruising down the freeway or during a slow trip through a parking lot. There isn't much information on this forum about this problem. Has anyone had this happen and what did you replace to fix it? The car going into limp mode on the freeway is getting a little old. The code I pulled is: P2138 - Throttle/Pedal Position Sensor/Switch “D/E” Voltage Rationality Link to comment Share on other sites More sharing options...
Th3Franz Posted November 26, 2010 Share Posted November 26, 2010 I would check the throttle position sensor. Maybe it went bad -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
tbssubaru Posted November 26, 2010 Author Share Posted November 26, 2010 Yes I figured that much out already . I'm wondering if anyone on the forum had a similar problem and what they did to resolve it. Our cars have 2 sensors from what I understand, one on the accelerator ($180) and one on the throttle body ($650) . Link to comment Share on other sites More sharing options...
Th3Franz Posted November 27, 2010 Share Posted November 27, 2010 I'd reset the code and see if it comes back. Also check behind your pedal to make sure the stopper piece is still in place and check the movement of the pedal. Unplug each sensor and check the connectors too -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
tbssubaru Posted November 27, 2010 Author Share Posted November 27, 2010 the code has reset and come back around a dozen times , i'll try cleaning the pedal connector and see if that helps, the other sensor is only sold with the throttle body for $650.00 , my warranty guide says that's covered by the 7/70 california emissions warranty so it will go to the dealer for that Link to comment Share on other sites More sharing options...
Boostin1657615274 Posted November 27, 2010 Share Posted November 27, 2010 page 2196, EN(H4DOTC)(diag)-326, of my 2005 vacation pix have a pretty funny shot of me under the dash diagnosing an accelerator pedal position sensor On the search for a new DD... Link to comment Share on other sites More sharing options...
tbssubaru Posted November 27, 2010 Author Share Posted November 27, 2010 how do i see those? was it the pedal sensor? the dealer told me i have to buy the whole pedal assembly to get the sensor ... Link to comment Share on other sites More sharing options...
tdelker Posted January 24, 2011 Share Posted January 24, 2011 has anyone got an update on this issue? My wife's car just started doing this, about 1x per week. Very annoying and dangerous. Since it's so intermittent, I can't get it to a repair shop before it clears and I worry diagnostic won't turn anything up and they will have to start throwing parts at it. It would be nice if others have found a solution... One new piece of info for me - it did it the other day while in cruise control so I can't see it's got anything to do with the pedal positioning sensor... Tom Link to comment Share on other sites More sharing options...
tbssubaru Posted January 24, 2011 Author Share Posted January 24, 2011 I replaced the accel pedal assembly which comes with a new sensor. Took 1 socket and 10 minutes to do and I haven't seen the problem since. Link to comment Share on other sites More sharing options...
tdelker Posted January 25, 2011 Share Posted January 25, 2011 Do you have a part number for the pedal assembly? I was looking online but couldn't easily find the part... Link to comment Share on other sites More sharing options...
tdelker Posted February 22, 2011 Share Posted February 22, 2011 In case anyone else checks this thread - I appear to have significantly reduced the occurance of this problem by seating the connect on the accelerator pedal assembly. I was looking for potential places were there could be a loose connection or frayed wire. I noticed that the plug had backed off a ways on the connector, so I pushed it back down. Was happening 2-3x per week before doing this. Hasn't happened since doing this, and its been about 4 weeks. I'm not saying I cured it for sure, only time will tell since it is intermittent. Tom Link to comment Share on other sites More sharing options...
muddy02 Posted April 11, 2013 Share Posted April 11, 2013 i had this happen over the last week or so. I took apart the connectors at both ends, the pedal and the throttle body. Sprayed with electrical cleaner, and added some dielectric just for ha ha's. Now we wait. I'll report back if it fixed the issue. It's not about speed, it's about acceleration! Link to comment Share on other sites More sharing options...
tdelker Posted April 11, 2013 Share Posted April 11, 2013 Mine is still fixed a few years later... Link to comment Share on other sites More sharing options...
muddy02 Posted April 24, 2013 Share Posted April 24, 2013 as of today, hasn't reoccurred since. Enter jinx.... It's not about speed, it's about acceleration! Link to comment Share on other sites More sharing options...
DeltaNu1142 Posted April 24, 2013 Share Posted April 24, 2013 If this happens again, I have a spare accelerator pedal assembly that I'd be willing to lend out... that means, I'll send it to you on your dime, and if it works, just send mine or a functional one back. I'd prefer to see a reasonable iTrader feedback rating before shipping, though. Tits mcgee Link to comment Share on other sites More sharing options...
muddy02 Posted May 13, 2013 Share Posted May 13, 2013 still no issues... one month later now. It's not about speed, it's about acceleration! Link to comment Share on other sites More sharing options...
frank_ster Posted July 27, 2013 Share Posted July 27, 2013 this just poped up on the buckaru. i'll exchange the pedal assembly with my 2.5i see if the problem moves Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
frank_ster Posted July 29, 2013 Share Posted July 29, 2013 I didn't exchange any parts I just cleaned under the plastic cap of the throttle plate and so far so good been 3 days Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
muddy02 Posted October 2, 2013 Share Posted October 2, 2013 i'm still issue free It's not about speed, it's about acceleration! Link to comment Share on other sites More sharing options...
imblaze89 Posted October 24, 2013 Share Posted October 24, 2013 Hey guys I just got this code last nite, as cold weather hit..sorry for the ignorance but where is the connectors your checking? There is lots of connectors under dash near gas pedal but it was dark and cold wen I looked. Will check again today thanx Link to comment Share on other sites More sharing options...
frank_ster Posted October 24, 2013 Share Posted October 24, 2013 i'm 3 months .. had zero instances of this happening again. ^ there is a connector going to your gas pedal and one going to the throttle body. the throttle body will be difficult to get to. i recommend taking the cover off the side of the throttle body and cleaning it out with brake cleaner and compressed air. its simple no parts come flying out.. Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
imblaze89 Posted October 27, 2013 Share Posted October 27, 2013 Well I cleaned the accel pedal, and reset the codes.. But now have p0012 p0021 and the p2138 I havnt gotten around to clean tb yet, but these camshaft codes sound kinda scary.. Do you think their related? Any ideas? Link to comment Share on other sites More sharing options...
frank_ster Posted October 27, 2013 Share Posted October 27, 2013 clear the codes and see what happens .. if they are still active i'm sure it takes 5 seconds of cranking to actually get the car to fire up. it might be a ground issue or the big plug connector next to the turbo is loose. unplug and plug it back in Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
imblaze89 Posted October 29, 2013 Share Posted October 29, 2013 Thanx I just cleaned the accel pedal and flushed the oil and changed it was filthy.. Havnt seen any more codes knock on wood thanx again! Link to comment Share on other sites More sharing options...
frank_ster Posted October 29, 2013 Share Posted October 29, 2013 ^ engine oil has nothing to do with it! Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
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