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The mkiv Supra Owners Club

Code 34


ben_harmer32
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I've been getting error code 34 coming up when boosting the car (not all the time).

 

Checked all VSV and vac lines and all seem good. The car has a boost controller fitted but it is not on.

 

I went to my friends and using his Supra as a guide put all the vac lines back to stock and removed the solenoid for the boost controller. Still have the same issue.

 

So decided to check the ECU and discovered my car doesn't have an FCD fitted (despite having a receipt for the part and for the fitting from the previous owner). I speak to him regularly and he was as shocked as me.

 

I'm guessing/hoping the error code 34 is down to the stock boost cut? (Happens at around 15.8 psi which is essentially just over 1 bar) Car has double decat and a restrictor ring fitted.

 

Does this sound about right? Should the car be running that much boost using the stock VSV's just from having decats?

 

Thanks in advance!

ECU Diagnostic codes 3.jpg

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Thank you.

 

Found this in one of the threads

 

Well that error code means you are overboosting as far as the ECU is concerned, you'll get it logged every time you hit fuel cut. If you reset the ECU and drive so you go on boost but don't go over say 0.8bar then check the codes again, you'll probably find the error isn't there. Hit 1.2bar then and recheck and it'll probably be back.

 

-Ian

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