Some error codes explanation?

funthrulens

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Hello
I checked the engine codes today (M42 script) I have 2.0 M52 BMW Z3 from 1999.

Here is a list:

I found out that lot of these codes are related to engine relay or air system (lot of these errors with frequency: 0) that feeds fresh air during cold start. But I cant find relay box neither the air valve - my engine looks like this and there should be air pump feed to the engine but its blinded (next photo)




Anyone has some solution? Where is the air valve or how to solve these errors?
 

t-tony

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Hi, can't see your pictures.

Tony.
 

Devon Z

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Can't comment on the codes but you say your using M42 script on an M52TU engine?
From the pictures you have no auxiliary air pump system fitted, that's a factory blanking plate and the pump would be where your washer bottle is!
 

t-tony

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Those relate to the so called smog pump, which as said your car doesn't have.

Tony.
 

funthrulens

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Isnt it strange that I havent got this so called smog pump, but I have the error codes? A picture of 2.2 engine here also doesnt have it...is it something country related?

Yes only M42.0 for M52 new script in INPA works
 

t-tony

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Have you cleared the codes, and if you have, do they come back? My 2000 Z3 2.0 had this pump, but I ditched it when the bearings in the pump failed. It easily passed the UK M.OT. Test emissions without it fitted. As far as I'm aware it was fitted (not on all models) for the US markets.

Tony.
 

funthrulens

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I cleared the codes and drive some miles and only few of them came back.
Error 133, 11, 52, 35, 62, 126, 127 is now on. I was wondering just because of the MOT, but I believe these errors can be there always because of the absent "smog pump" but the software is always the same in the car with or without it right?

As to the code 133 signal can asc 3 could it be speed sensor?
And the 11 is related to the temperature unit somewhere near radiator and hoses for cooling circuit.

Edit: car is originally from Italy and Im the fifth owner so maybe someone ditched it too.
 
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