Hi friends, my name is Chris from Ecuador, I had read them before but had not registered, I have a problem with my skoda fabia 1.4 16v bbz a while ago while I was driving the oil light on the panel came on, I stopped and opened the engine and my oil was spread everywhere, my pcv La  The hose had broken I decided to change it for a new one and that day started my problems, they changed it in the skoda service then my car that day turns off if I don't accelerate it, this happens after 15 minutes of ignition, then I wait 45 more minutes  and you can turn it on.  As additional information I do not have any witness on the panel of my vag only two errors appear (probe B1S2 short to positive and probe B1S1 electrical fault) I do not know if these errors can cause my skoda fabia to stop at idle.

Hi friend. Sorry to say that, but you gave so many confusing information. Read faultcode from ecu via OBD and post it! Was your engine running with low oil pressure for a long time? If yes, it can lead to mechanical damage! Anyway tons of failure can cause idle problems such as dirty throttle body, dead ignition coils, stucked, opened EGR, leaky intake manifold etc. And of course idle problems usually comes when the engine is warmed up. Maybe you should take the car back to the service station.

16 hours ago, Pisti said:

Hi friend. Sorry to say that, but you gave so many confusing information. Read faultcode from ecu via OBD and post it! Was your engine running with low oil pressure for a long time? If yes, it can lead to mechanical damage! Anyway tons of failure can cause idle problems such as dirty throttle body, dead ignition coils, stucked, opened EGR, leaky intake manifold etc. And of course idle problems usually comes when the engine is warmed up. Maybe you should take the car back to the service station.

Hello friends, thanks for the answer, here is my last Vagcom session, my EGR, TB are clean and with adjustment made, the service already made an intake cleaning, my car was not subjected to low oil pressure so I rule out a  mechanical damage, the first 10-15 minutes of ignition of the car are very good, then at idle if I do not accelerate the car the engine turns off, I have carried out a test of the ignition coils and I think they are correct too, Vagcom does not indicate any misfire  in cylinders, the temperature is also marked well on the dash, but I also found a problem in the radiator temperature sensor and it does not activate the fans, the relay under the battery is correct I disassembled it and checked its circuit but I have problems with the sensor  temperature that is in the radiator, can this cause my car to turn off, my temperature does not rise above 90 degrees on the dashboard or in Vagcom before turning off, I have been thinking about a theory that re  I saw in diagram how, if I have a short to positive in both lambda probe and this wiring is related to injectors and fuel pump is it possible that is my cause of the problem?  That is to say, does the short make the injectors not pump stop?  additionally my fuel pump was measured and the pressure was within the parameters, my spark plugs were changed and my injectors cleaned, I appreciate your help friend

16 hours ago, Pisti said:

Hi friend. Sorry to say that, but you gave so many confusing information. Read faultcode from ecu via OBD and post it! Was your engine running with low oil pressure for a long time? If yes, it can lead to mechanical damage! Anyway tons of failure can cause idle problems such as dirty throttle body, dead ignition coils, stucked, opened EGR, leaky intake manifold etc. And of course idle problems usually comes when the engine is warmed up. Maybe you should take the car back to the service station.

 

VAG-COM Version: Release  311.2-N

 

Control Module Part Number: 036 906 034 FF

  Component and/or Version:  MARELLI 4MV G      6224

           Software Coding: 00061

            Work Shop Code: WSC 13765

           Additional Info: TMBPD16Y474006084     SKZ7Z0F3471296

2 Faults Found:

17604 - Oxygen (Lambda) Sensor Heater Circuit: B1 S1: Electrical Malfunction

        P1196 - 35-00 - -

17591 - Linear O2 Sensor: Reference Voltage: Short to Plus

        P1183 - 35-10 - - - Intermittent

1 hour ago, ChrisMG said:

I have been thinking about a theory that re  I saw in diagram how, if I have a short to positive in both lambda probe and this wiring is related to injectors and fuel pump is it possible that is my cause of the problem?

 

Yes, it will never run properly if this isn't fixed. Your fault codes are only indicating a problem in one sensor.

 

''B1 S1'' (bank 1, sensor 1) is the lambda sensor before the catalyst. It may be a faulty sensor or wiring issue.

Edited 24 January, 20215 yr by TMB

But it is possible that the pre cat lambda probe causes the engine to turn off, I had seen cases in which it causes greater fuel consumption, all this is very rare, tomorrow I will change the radiator temperature sensor too, you know the color diagram of the  lambda probe pre cat ?? Thanks for your help friend

13 minutes ago, ChrisMG said:

But it is possible that the pre cat lambda probe causes the engine to turn off

 

I would suggest fixing the lambda probe and then see how it goes. Unfortunately I don't know the wire colours but someone else might.

 

14 minutes ago, ChrisMG said:

Thanks for your help friend

 

No problem

On 24/01/2021 at 18:12, ChrisMG said:

But it is possible that the pre cat lambda probe causes the engine to turn off, I had seen cases in which it causes greater fuel consumption, all this is very rare, tomorrow I will change the radiator temperature sensor too, you know the color diagram of the  lambda probe pre cat ?? Thanks for your help friend

 

Hi ChrisMG. After about 15 minutes the engine controll module should be in closed loop state. From this point the engine will start using the sign of the front oxigen sensor. If your oxigen sensor is not working at all, i think the engine will probably stop, but I'm not sure. According to your fault codes linked before your front oxigen sensor isn't working. I suggest you to check the cables and wiring before buy a new one. I attached for you a schematic for this engine. You can find the oxigen sensor on the page three, with the mark of B72-I. I suppose the label of the wire colors are in german language. In the schematic you can see that the sensor heater circuit supply is on the Fuse 9. You should check this fuse first. Have a nice day!

 

elshemecu1416v.pdf

Hi Pisti, thanks for your time to answer me , I checked just yesterday the wiring with a diagram that I found in cardign.com and the cables are correct without shorts to positive or ground, but I remembered something that the service told me, that many years ago my car had damage and it was disarmed they had disarmed the entire lambda probe connector and then they put it back together (you know 1-yellow 2-blue well I think that's the way I don't remember) but I don't know if they did it right or maybe they were wrong In the color pin of the cable, I have tried to search the internet for the order of colors of the pre cat lambda probe but I have not found it I know that it is an NTK but I do not know the colors and pins maybe my problem is there... thanks friends

On 26/01/2021 at 18:01, ChrisMG said:

Hi Pisti, thanks for your time to answer me , I checked just yesterday the wiring with a diagram that I found in cardign.com and the cables are correct without shorts to positive or ground, but I remembered something that the service told me, that many years ago my car had damage and it was disarmed they had disarmed the entire lambda probe connector and then they put it back together (you know 1-yellow 2-blue well I think that's the way I don't remember) but I don't know if they did it right or maybe they were wrong In the color pin of the cable, I have tried to search the internet for the order of colors of the pre cat lambda probe but I have not found it I know that it is an NTK but I do not know the colors and pins maybe my problem is there... thanks friends

 

Hi, Chris. Is your problem still exist? Have you checked your lambda probe's wiring? Colouring of the pre cat lambda : 1 - brown; 2 - blue+red; 3 - orange+violet; 4 - orange+green; 5 - orange+brown; 6 - orange+brown.