Lost boost help
#17
Hmmm... that's P1249 in my version fo the manual. Must be the year difference. I'm not 100% sure what year my manual is for.
#18
P1250 Boost Pressure Control Deviation - Above Limit
Possible fault cause
♦ Bypass flaps incorrectly adjusted
♦ Turbocharger faulty
check the wastegates!
#19
Here's the page from my 2001 Porsche 996TT OBD II DME 7.8 manual. Strange... there is no P1250, and P1249 seems to cover this. Do I just no know how to read the manual???
#20
And here is 2pages after that one...I can not offer any comment about your literacy...perhaps your service book is missing pages?
Last edited by wross996TT; 05-23-2016 at 11:47 AM.
#21
Jon
#22
Ok new maf sensor arrived i cleared all codes , fitted it and went for a drive the car drove fine but when i got back the code P1250 was back. I have since cleared the codes again and re fitted the standard box with the new sensor, went for the same drive and no codes
#23
Neil...code P1250 IS NOT the MAF...did you read my post....you need to check the wastegates...look for cracks and or possible out of adjustment.
#24
Wanna comment now on my literacy - or maybe I'm just an "outlier"?
Jon
#25
Wross996TT I know that is not the code for the maf , the maf code has cleared with the new sensor. What i dont get is why the P1250 boost fault code is only coming up with the AP intake box and not the Standard box ? The car is driving fine with both fitted.
#26
Did you check your wastegates? Forget about the intake for now.
#27
Yes wastegates checked and are ok, also did a leak test and it is leak free at 1.5 bar. The car is now boosting as normal but only bringing up that code with the new intake fitted.
#28
Well I had another intake (V something...LOL) from another tuner and it didn't work for me either (I went through 3 MAFs)...so I now have an intake that works...so I feel your pain. Luckily I sold the one unit and recouped my $
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