Diagnostic Cable INPA code

B

benben

Member
So I ran the OBD cable as i was getting the airbag light (i suspect caused by seat sensors) as well as the engine light (exhaust emission light)[suspect Oxygen sensors due to it being a common issue as i have heard and it is making the car use more fuel than usual and also at the lights when i idle the car starts shaking like its about to stall.

So i used INPA diagnostic tool and well it wasnt that helpful but i got the following codes. Was wondering if it makes sense to anyone as i am trying to figure out how to fix it and which of the two oxygen sensors needs to be replaced.

I will attach the print screen of the error reading in the next post below
 
Clear all of the errors and then redo the tests after going for a short drive.

What makes you so certain of O2 sensors? Not that common an error and symptoms you describe are more likely to be a vacuum leak (I.e. A hole in one of the intake boots between the MAF and the engine).

The issue with the airbag is that you can read the error using the Kombi but the Z has a SAfety Module (SIM) which can't be accessed by INPA so that's why you get no response fromt control unit when you try and read it.

Also do what I said and post up the live readings with the engine running, you can see all of the sensors and the readings to tell you what is happening with the engine. Much more useful than just reading codes. :thumbsup:
 
Thanks stratts really appreciate it.

O2 sensors was just a guess it could be many things like you say, the code doesnt seem to be able to say much.
I will post the results with the engine running (print screen) and see if that sheds any light on it.

As for the seat sensors I will try the DIS v57 instead then but abit hard to work it and slow!
 
Ok here are the results. I am now getting these errors not sure what to make of them.
ignition2error.png




with the car off and keys in ignition no 2
ignition2.png





with the engine running
running.png



lambadarunning.png

ignition2adpt.png


It may be of importance to note while the car was running "point of ignition cylinder 1" kept fluctuating between -20 and 10 roughly.
 
Comparing some of my data to yours there are a couple of differences, specifically:

Lambda Integrator and Adaption Values (Bank 1 and 2) look a lot higher than mine
Lambda sensor voltage is a lot lower than mine (I have .64v Bank1 and .09v Bank 2) - Not sure if this is relevant as the voltage changes with revs, engine temp, etc.
Your multiplier adaption values (i.e. long term fuel trim) look a bit off, which Is causing your engine light

Although you think (because of the errors) that there is a Lambda (O2) sensor error, I think this again indicates that you have some form of mixture issue as the adaption values are probably over the limit. You could try unplugging the MAF while the engine is running to see if it causing an issue.

If you are sure that there is no air leak or MAF issue, then maybe new O2 sensors are the answer. Maybe.

I am currently away from the UK so I can't get any further comparison to my readings, hopefully someone else on here can give you their values for the above as a better comparison.
 
alright thanks for that stratts I am taking the car to the mechanic will see what happens ill keep you guys posted
 
Olright so the mechanic sprayed it and it was exactly as you said there was a vaccum leak. He is gonna open up the head and all that to see what exactly needs to be changed.

Meanwhile the following codes came up. Do they make any sense to anyone?

29A3H/10659
29A7H/10663
2883H/10371
2882H/10370

P0174 system too lean B1
P0171 system too lean B2
 
Had this on wifes E46 with M54 engine replace O2 sensor on advice from indy didnt resolve issue later my local 'oiley' spotted a perished vent hose number 4 here



Replaced it - problem solved
 
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