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#Installed rob tune ecu and codes 45 21 12

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 Post subject: Installed rob tune ecu and codes 45 21 12
PostPosted: Sun Oct 22, 2017 3:17 pm 
In Neutral
Joined: Sun Oct 04, 2009 3:19 am
Posts: 35
Hey guys I installed my robtune finally . It’s been years of dreaming of getting this far . Once the car is running it runs great but I am getting codes 12 21 45 code 12 is normal because the starter is wired to a hidden button i had a car stolen... but the codes 45 and 21 are new code 21 is coolant temp sensor and 45 is pressure sensor does it mean map? Anyway the car has a terrible time starting on a cold start it takes a couple minutes of trying . Once it’s running it runs great and on a warm start the cel goes away. So is there something I missed in the wiring convention ? I also did a coil over plug conversion at the same time . I didn’t mess with coolant temp wireing at all . And is code 45 the map sensor or boost control. It just says pressure sensor . I followed instructions from how to convert coil over plug thread viewtopic.php?f=19&t=53990 . It’s just weird that the coolant temp would fail at the same time as converting to robtune. Thanks for any help , also I just put it into d check mode and driving around the only code it flashes is 43 throttle switch . The coolant temp code and pressure sensor code do not flash.


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 Post subject: Re: Installed rob tune ecu and codes 45 21 12
PostPosted: Thu Apr 12, 2018 7:08 pm 
Site Admin
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Joined: Tue Oct 15, 2002 11:37 am
Posts: 27157
Location: Houston, Tx
Did you end up getting this resolved or are you still having the problems?

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Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

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 Post subject: Re: Installed rob tune ecu and codes 45 21 12
PostPosted: Mon Apr 16, 2018 3:45 am 
In Neutral
Joined: Sat Apr 05, 2014 12:12 am
Posts: 43
Location: Denver-Front Range
Id like an update as well, I am literally dealing with those exact codes after my robtune install and a new swap.

Edit: I am not seeing 12... I am seeing 21 and 45.


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 Post subject: Re: Installed rob tune ecu and codes 45 21 12
PostPosted: Mon Apr 16, 2018 4:33 pm 
Third Gear
Joined: Thu May 03, 2012 6:24 am
Posts: 800
Location: Bonney Lake, WA
code 45 is your map sensor.
maybe they were stored codes in the ecu?

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Kris

'91 Mica White SS - R.I.P.
'88 White RX Turbo sedan - SOLD
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'93 Silver Turbo Wagon - Hibernation/Project Mode
'91 Black Camry Alltrac - R.I.P.
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 Post subject: Re: Installed rob tune ecu and codes 45 21 12
PostPosted: Mon Apr 16, 2018 7:15 pm 
Moderator
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Joined: Tue Aug 25, 2009 7:52 am
Posts: 4658
Location: Des Moines, Wa
Josh usually advises to start with the lowest number code and fix that first.

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