 Fault code 42 - Speed sensor signal - info please!, Code 42 for 3sge UK 2.0 Celica GT |
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 Jan 22, 2007 - 9:23 AM
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 Enthusiast  Joined Dec 18, '06 From Bristol, UK Currently Offline Reputation: 0 (0%)  |
Hi there,
Ive had the lovely take to mr T light lit on my Celi since ive bought it and i decided to see what it was the other day... turns out ive got code 42 (4 flashes, pause 2 flashes) coming from my ecu, relating to the speed sensor signal... I cleared the code to see if it was an old one and it worked - untill i drove it for about 10 minutes! Anyway its now come back and im wondering whats the deal! nothing seems wrong with the car (other than im getting between 22 and 24 MPG... could this be related????????????). Shold i take it to mr T and let them look at it for just under £90 per hour??? To be blatently honest i have no idea what the speed sensor signal is anyway! Thanks in advance for any help!  PS its a '95 2.0 3sge UK Celica GT (non import) --------------------  |
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Jan 22, 2007 - 9:53 AM
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 Enthusiast Joined Feb 3, '06 From Czech Republic (Europe) Currently Offline Reputation: 56 (100%) |
only what I can say about "42" (again
) is this... 
-------------------- No more replicas... This is evolution... This is SS-four :)
 ________[Featured Celica of 6gc.net @ 2010]_________ |
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Jan 22, 2007 - 10:40 AM
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Enthusiast Joined Dec 18, '06 From Bristol, UK Currently Offline Reputation: 0 (0%) |
QUOTE(malpaso @ Jan 22, 2007 - 2:53 PM) [snapback]519941[/snapback] only what I can say about "42" (again ) is this... Hmmm thanks for the response... sorry if youve posted it before - i searched but could not find! I have manual transmission (much more fun!). I still dont really get what it means... my coolants overheating???  -------------------- |
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Jan 22, 2007 - 10:55 AM
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Enthusiast Joined Feb 3, '06 From Czech Republic (Europe) Currently Offline Reputation: 56 (100%) |
QUOTE(jameslemanski @ Jan 22, 2007 - 4:40 PM) [snapback]519960[/snapback] QUOTE(malpaso @ Jan 22, 2007 - 2:53 PM) [snapback]519941[/snapback] only what I can say about "42" (again ) is this... Hmmm thanks for the response... sorry if youve posted it before - i searched but could not find! I have manual transmission (much more fun!). I still dont really get what it means... my coolants overheating??? that "again" was about amount of information from me (#12 , #71), not about reposting 
-------------------- No more replicas... This is evolution... This is SS-four :)
________[Featured Celica of 6gc.net @ 2010]_________ |
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Jan 22, 2007 - 3:48 PM
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 Enthusiast Joined Jan 8, '07 From Sunderland UK Currently Offline Reputation: 0 (0%) |
the speed signal comes from a sensor on the gearbox and goes to the speedometer. on the 95 gt it is a blue wire. I know that as I've recently fitted a cruise control and that is where it's signal is picked up from.
Keith |
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Jan 22, 2007 - 4:02 PM
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Enthusiast Joined Dec 18, '06 From Bristol, UK Currently Offline Reputation: 0 (0%) |
QUOTE(topshed @ Jan 22, 2007 - 8:48 PM) [snapback]520093[/snapback] the speed signal comes from a sensor on the gearbox and goes to the speedometer. on the 95 gt it is a blue wire. I know that as I've recently fitted a cruise control and that is where it's signal is picked up from. Keith Ok thanks, so any idea of the concequences of ignoring it?? im still confuddled as to what it means/does! cheers, James -------------------- |
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Jan 22, 2007 - 5:01 PM
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 Enthusiast Joined Aug 2, '05 From Guam Currently Offline Reputation: 15 (100%) |
QUOTE(malpaso @ Jan 22, 2007 - 9:53 AM) [snapback]519941[/snapback] only what I can say about "42" (again ) is this... Malpaso, so what are the conditions of testing? It has to be in neutral? Do you have to rev the accelatorator while in neutral? Where is this speed cable everyone is talking about? Any pictures? -------------------- 94 Celica GT
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Feb 17, 2007 - 5:01 PM
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Enthusiast Joined Sep 10, '06 From Overland, Missouri, United States Currently Offline Reputation: 0 (0%) |
I'm just guessing here.
Could be the sensor is out? This might cause it to think your going 0 MPH and your temp/RPM/Load are registering fine. would think this might affect the MPG too. Let us know what you find! |
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