AbuHsn

Hello wino update… I’ve put everything back, checked all the vacuum hoses no crack or demage. MIL was on at first but for some strange reason it went after about 10 mins of drive. Started the car this morning and drove for a while and strangely the MIL light went off. could it be the battery voltage as some people have mentioned in few forums? I don’t know. But thanks a lot for your help and advice. do appreciate. AbuHSN

Ok Will check in the morning and update. thanks for your reply do appreciate.

hello wino I’ve checked bt pins 2 and 63 and there is resistance and it’s 5.2ohm. I’ve put the things back checked the codes and behold there is another code now P0106. any idea what that could be? Thanks

Ok great Thanks wino I’ll check this afternoon and confirm.

Hi yes you are absolutely right. I don’t know what I was thinking when drawing it really. the pins are and should be as you described them and also fuse thing too. Pin 2 have lots of connections and if all is normal then I think I should try a different O2 sensor then. You racon but before I replaced the o2 s1 B1 the MIL was intermittent but now it’s constant. another thing happened yesterday when I put all back and started the car with fuse 9 out, the MIL light got cleared but after about 2 minutes came back, I turned off the car and put the fuse back started the car and Mil came immediately. I checked code and the Code for the O2 B1 s2 also came for a heater circuit problem. How can it just blow the sensor heater? I don’t know. To me This suggest there some eclectic circuits may be playing up somehow. I think I can get to the cause of p1180 1- p1180 (Linear Oxygen Sensor Pump Current Short To Positive) it might help putting things right. But I read somewhere that the ECU has a Skoda recall for updation, will have to ask Skoda for that. I’m rechecking the sponsors for resistance and voltage. the resistance between pin 1 and pin 2 is 3.8 ohm almost same for the old and new sensors. do you know what voltage / current should I get on each sensor adopter pins with all attached and car running? Thanks again for your Time and attention. AbuHSN

Ok thank you

Hello wino First of all thanks a lot for sparing time and quickly replying to my post. Do appreciate. Yes you are right, the second sensor B1 S2 never crossed me mind. Now I’ve realised that there could be connections through there as well so I decided to check the connection again thoroughly and managed to draw two tables showing connections in different pins. I’m attaching to pictures. i have been able to disconnect the B1 S2 because I’m trying to in do the central console to get access to the plug. Will do that later on. please have a look at the charts and suggest if these connections are in line with diagram or there seems to be some unusual connectivity causing a short circuit etc. I have tried to draw as clean as I could but if you have difficulty reading then please excuse my writing skills. thanks.

Hi there I’m new to this forum. Looking for some help. I'm working on this Skoda Fabia 1.4 2004 Auto 16v engine code BBY, having issue with O2 sensor. MIL is on. with Obd connected shows the following codes; p0135 (Heated oxygen sensor (HO2S) 1, bank 1, heater control circuit malfunction), p1178, p1178p, ( Heated oxy sensor 1 bank 1 heater current open circuit) so I replaced the sensor with a new same NTK one and cleared faults with a basic obd2 tool and now getting 1- p1180 (Linear Oxygen Sensor Pump Current Short To Positive) 2- p1178, p1178p, ( Heated oxy sensor 1 bank 1 heater current open circuit) 3- P0030, (Heated oxygen sensor (HO2S) 1, bank 1, heater control -circuit malfunction) 4- P0135 ( Heated oxygen sensor (HO2S) 1, bank 1, heater control circuit malfunction) I've read on a different forum that it could be a broken/ cracked wire from O2 sensor to ECU, so i decided to give it a go and check the continuity of the wires going from O2 6wire plug to ECU. For that i had to take the battery and casing out. the o2 sensor connector plug is marked from 1-6 from different color wires. I've checked the continuity on all wires and they end up in the big plug connecting to ECU. Only issue here is when I check continuity for Wire # 2 on O2 connector plug, which i suppose and remember is the live wire with ignition ON, it shows continuity with two different pins on the ECU connector and also shows continuity witht the ground wire (brown wire) , going from the same loom to the negative battery pole. i have checked the wiring loom pretty much all the way from O2 sensor plug to Ecu and there does not seem to be any crack or break in any of the wires. Now ! I'm not an electrician , just know the very basics about wirings. So I'm a bit confused whether its normal that the live wire #2 at O2 connector plug is connected to two different pins at ECU and also to the wire going to battery negative pole or is it that there should only be one ECU pin for each of 6 wires going in to the ECU from O2 Sensor Connector Plug and in this case of wires being fused together somewhere and being connected to more then one pins at ECU and i need to dig further? anyone with any help ? much appreciated. thanks ash