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P1545 throttle body malfunction

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Old Oct 27, 2007 | 06:29 PM
  #1  
boboocon's Avatar
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Joined: Oct 2007
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Default P1545 throttle body malfunction

Can someone please advise if the throttle body/control can be clean/repair or does it need replacement. The car can idle fine, but has a mind of it own when try to accelerate at 1.5K, but if I am lucky to take it up higher than2K rpm, I can have control of it. Once it drop back to idle, difficult to get pass 1.5K
This is for A4 2.8, so it looks difficult to take out the TB.
Any help given is greatly appreciated.
 
Old Oct 27, 2007 | 11:54 PM
  #2  
hiwords's Avatar
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Joined: May 2007
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From: noob from NY
Default RE: P1545 throttle body malfunction

so ur saying u'll accelerate but the rpm bounces at 1.5k? get ur fault codes scanned. i think it's ur MAF
 
Old Oct 28, 2007 | 09:57 AM
  #3  
CRAZYHAWK's Avatar
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From: Northern NJ USA
Default RE: P1545 throttle body malfunction

If you're DBW, do a throttle body alignment.
 
Old Oct 28, 2007 | 09:57 AM
  #4  
onepoint8tee's Avatar
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Default RE: P1545 throttle body malfunction

Well, you have the code, did you try to clear it? When my battery died once, after I jumped my car, I had that fault code (but the engine ran fine.) It took a few tries, but eventually the code cleared.
Cant do a TBA when there are fault codes for the TB.
 
Old Oct 28, 2007 | 11:22 AM
  #5  
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Posts: 12,826
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Default RE: P1545 throttle body malfunction

P1545 = throttle valve tight/sticking ( clean it out ) other possibles are wiring and throttle control unit
 
Old Oct 28, 2007 | 09:28 PM
  #6  
boboocon's Avatar
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Default RE: P1545 throttle body malfunction

It has a bunch of codes on inital scan, ex. all 6 cycliders have fuel injected open circuit, MAF, throttle malfunction... after playing around, i cleared the codes, this P1545 throttle malfunction is the only one that came back. it'sa 98, it has cable connected to throttle, so TBA not applied
the car idle fine, but when I step on the gas, it tries to accelerate, but difficult to get pass 1.5K. it seems as the engine got cut outeither by lack of air,and misfire. Engine sounds terrible.But if it gotpass 1.5K mark, then I can holdor accelerate,then it sort of die out again. I can try to clean the throttle body, but whatabout the throttle control unit?can it be clean too or does it need to be replaced (sorry, i am not familar with this part) Will reseting the ECU help? I've read many posts about this problem, but not lucky enough to havefound one with the solution yet. And I can't afford to replace the TB then come to find out that was not the root problem.
Thanks again for all the help.
 
Old Oct 29, 2007 | 10:07 AM
  #7  
CRAZYHAWK's Avatar
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Joined: May 2004
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From: Northern NJ USA
Default RE: P1545 throttle body malfunction

17953 P1545 Throttle Pos. Contr Malfunction
 
Old Jun 25, 2018 | 08:16 PM
  #8  
Tim Leyba's Avatar
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Joined: Jun 2018
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Im having the same problem it wil idle fine but when i put it in gear and try to drive i cant get over 5 mph
 
Old Aug 29, 2018 | 02:40 AM
  #9  
mrs.missme541's Avatar
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Joined: Aug 2018
Posts: 2
From: california
Default

hey so i have the p01545 on my a4 quattro (2001 - awm engine)
the only difference is the very second i touch gas pedal it dies and it will die regardless after about 30 seconds...a quick background i broke and replaced my oil pan last month and since then i have had nothing but issues i did do a shifter linkage alignment, i bought a new used throttle body but havent recieved it yet and a new pcv breather hose kit ( found crack in part behind dipstick also will be here tomrrow or thursday i just wanna go home back to oregon im in oroville ca if anyone is nearby and can help this chick out
 
Old Oct 14, 2018 | 02:58 PM
  #10  
steve.massiah's Avatar
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Joined: Sep 2018
Posts: 41
Default

Hi Guys!
I have an Audi A6 Quattro and I am getting P1545 Check engine problem Throttle body milf also the car want drive around 23 miles and it want shift can you please advise, when I tried to drive it i got some fire coming from the button of the car so I stooped the engine right away.
 



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