2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

TPS code 12

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Old Jun 20, 2004 | 11:23 AM
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TPS code 12

tried searching about it, found out some info, but i dont really understand it. im throwing code 12...

now does that mean i need to replace my tps? if not what do i look for? etc, etc.
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Old Jun 20, 2004 | 11:29 AM
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Code 12 - Trailing side coil failure.
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Old Jun 20, 2004 | 12:51 PM
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ouch...that blows...


for some reason i didn't think 12 was a coil pack though

'
Edit: there is a reason for that...

EDIT: ok maybe theres not.

EDIT: I had to do some searching on this one!

Thread author has an S5, Code 12 refers to out of range TPS.




that was confusing eh?

Last edited by Kenteth; Jun 20, 2004 at 01:07 PM.
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Old Jun 20, 2004 | 12:58 PM
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EDIT: ok this is Obviously series dependent.

85-88 S4: Code 12: Trailing Pack, failsafe is to disable...
89-91 S5: Code 12: Full Range TPS, failsafe 100% throttle.
91-9? S6: Code 12: Full Range TPS, failsafe 100% throttle.

S5 TPS Adjustment per TPS




Ok, this is the method I used, and its the only one I got to work correctly... TPS Adjustment (based s4, but just use the same wires for the s5 and it works fine) per RETed: http://www.fc3spro.com/TECH/HOWTO/TPS/tps.html

Last edited by Kenteth; Jun 20, 2004 at 01:08 PM.
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Old Jun 20, 2004 | 01:39 PM
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yea sorry i have a 90 gtu

edit: thanks for the info i'll be out there tomorrow, as for today, ive got to kick this cold. :sick:
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Old Jun 20, 2004 | 03:24 PM
  #6  
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oh man, sorry for not clearing that up
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Old Jun 25, 2004 | 12:53 AM
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From: Brampton
failsafe 100% throttle

Whats that mean?
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Old Jun 25, 2004 | 09:36 AM
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it mans your gonna be running REAAALLLLYYY rich, thats what it means.
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Old Jun 25, 2004 | 02:28 PM
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It means when the TPS enters failsafe mode (the sensor is out of range, so the ECU compensates witha set value) the value it uses similates the throttle plates/throttle being wide open all the time.

Now imaging having the plates closed at idle... but the ECU still is telling itself that its wide open. Massive amunts of fuel are being dumped into the engine.
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