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Discussion Starter #1
I 'cant found the topic of ecu error codes, I can view topics from 2002?

Sorry, thanks!
 
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David

Here are the fault codes.

4-4-4-4 - no errors
1-2-1-1 - battery voltage
1-2-1-4 - engine temperatue sensor
1-2-1-6 - throttle valve sensor
1-2-2-1 - air flow meter
1-2-2-2 - idle actuator (opening)
1-2-2-3 - regulation of lambda probe
1-2-2-4 - heated lambda probe
1-2-2-5 - air temperature sensor
1-2-2-6 - electroinjectors (group 1)
1-2-3-1 - power ciruit (inside control unit)
1-2-3-2 - electroinjectors (group 2)
1-2-3-3 - idle actuator (closure)
1-2-3-5 - compressor inlets
1-2-3-6 - compressor command
1-2-4-3 - fuel pump relay
1-2-4-4 - vapour recovery solenoid valve
1-2-4-5 - timing variator relay (1.8 and 2.0 TS only)
1-2-5-1 - control unit EPROM
1-2-5-4 - throttle valve sensor (signal)

I trust this is what you're after.
 
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Discussion Starter #3
How the codes are interpreted?

In position MAR, I press five times the accelerator.

But.... I don't kwon more!

Thanks!!
 
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1-2-2-4 - heated lambda probe !! :eek:

Thanks very much Barry!!

I press five times the acelerator, but I get 1 - 1 - 2 - 2 - 4.

The first ON/OFF is valid?
 
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Discussion Starter #5
Always do 1 - 2 - 2 - 4 :)

I need change lambda probe or check the connection?

Thanks!!! :D :D
 
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Discussion Starter #6
You've just had a complete conversation with yourself!!!
:D :D :D :D
Usually the lambda probe fails, they can be checked, somewhere on the forum is the info you need to check it.
I'll have a search to see what I can find. You just carry on chatting to yourself.
 
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David
I've found this on a previous post.

"If you disconnect the Lambda Probe, you have to ground the line coming from the ECU, otherwise it will run on the last parameters.

It's quite easy to find out if it works or not.

Attach a digital voltmeter to the connected Lambda Probe. Readings have to fluctuate in between 0,2 and 0,9 volts within a second or so. If the reading is static, the Lambda has dried up".

Hope it helps.
 
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Discussion Starter #9
Hi,

Does this technique work for all 155s, or only certain models/ECU versions?

Robert
 
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Only works for some, definately not on the 2.0 16v. Try it and see :D

wrinx

edited by wrinx for being a muppet :D
 

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Hi Wrinx!

Do you think that the 5 times press accelerator works in the 2.0 16 valves ? :confused:

Thanks
Jorge
 
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Discussion Starter #13
David155:
I 'cant found the topic of ecu error codes, I can view topics from 2002?

Sorry, thanks!
Use the search button at the top of the page and make sure you include "Search by date - any date"

wrinx
 
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Discussion Starter #14
definately not on the 2.0 16v. Try it and see :D

wrinx

edited by wrinx for being a muppet :D
Bummer. Thanks anyway. Guess it's and Alfa reader or nothing for the later cars then.
 
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Discussion Starter #15
There is a method using a miltimeter into the ECU but I couldn't make head nor tails of it :rolleyes:

wrinx
 
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Discussion Starter #16
Thanks! :D

The next weekend i'll change lambda probe, and try me "new" car :D :D

I'm preparing my car, a light copy of 156 autodelta but without big rear spoiler, I hate this type of spoilers :p

I need practise my bad english... I need a english girlfriend :D :D :p
 

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Hi,

My Alfa 155 1.7 V8 has fault code 1-2-3-2 - electroinjectors (group 2).
Can anyone tell me which one from this four injectors may has problem?
form left side two or from right side two?


thanks in advance
 

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Numbering normally starts from the crank pulley / timing chain end.....so no 1 is at that end, number 4 at the gearbox end......
 

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Wow, this thread resurrection is TEN YEARS OLD

:thumbs:
 
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