Strange error code

[Jeff Alton]

Getting a check engine light on our 05 turbo. Codes pulled off Durametric are PBB48 and PBD48. Never heard or seen codes in that format....

Ideas??

Cheers

[Loren]

Have you shut off the ignition and tried again?

Can you clear the codes?

[Jeff Alton]

I can clear them, then they return after a short while. The codes appear twice, once stating that they are not causing DTC and then agian stating they are once the light comes on. The symptoms while driving are that it is does not want to shift up down in the usual fashion, seems to hold gears longer under light load. No other faults anywhere in the vehicle.... Once reset, it runs great until the codes re appear....

Cheers

[Loren]

Very odd - perhaps someone close with a PIWIS?

[Jeff Alton]

I have access to one next week and will see what it says......

[wvicary]

When these codes appear they are no transmission codes? How many key cycles until the codes return?

[Jeff Alton]

Not sure on Key cycles, after a maybe 25 miles.... No transmission codes. However I think I have found the issue, a little work tomorrow and I will report back!

Cheers

[Jeff Alton]

OK, appears to be fixed.....

With the hood up and engine running I could hear what sounded like a vacuum leak. After some investigation I found a rubber tee in the vacuum lines that run under the throttle body was the culprit. The tee is supposed to be held to the Y shaped plenum that attaches to the trottle body. It was not, clip was broken. That allowed the tee to rest against the serpentine belt and pulley which wore a hole through it.... I did not get the factory tee, just a brass one and some 3/8 fuel/vacumm hose and re routed and connected the line all back up again. Problem appears to be solved. Leak is gone, codes have not returned and it is shifting properly....

Cheers