Cris

http://s15.postimg.org/4ttcyn7gb/catalytic_inside.jpg

Sorry but I don't know Czech language and google translate does not know all of the words. I understand that would be recommended to check the "CAT". I removed the lambda probe and checked the comb from "CAT". Looks very clean and very white. Something like this:http://s15.postimg.org/k2a3kxmd7/catalytic_inside.jpg

So the verdict is: I need to change the pump. Thanks a lot!

Hello again, Although it's been a while since I have posted here and come back with a question on this subject. I recently used to clean the 2 products: Wynn's Formula Gold treatment and Wynn's Dry Fuel . The result of using these products is that now there is only one error 16804 - Catalyst System, Bank 1: Efficiency Below Threshold We also determined that CAT, lambda probe and EGR are okay. In addition we have checked if the fuel pump provides enough fuel and I find that probably is defective because it does not provides enough fuel and pressure is low. Now I have 2 questions: The first is if you really need to change the fuel pump and the second is if this deficiency can lead to this error? Thanks, Cris

1 week ago I made ​​a long way and I expect after the 300 km to see if errors occur. And obviously they appeared again. I checked and the same 16 804 Catalyst System, Bank 1: Efficiency Below Threshold but instead of 17,811 EGR System: Regulation Divergence had 17511 Oxygen (Lambda) Sensor Heating: B1 S1: Performance too Low p1103-35-10 - Intermitent. I reset and after 300 km I thought it would be better to check again. And of course those two errors that occurred (17,811 and 16,804) were there, just not the witness had appeared on the board. I want to take out the EGR and see if errors appear. Best regards, Cris

Remember Fabia AZQ engine 1.2 12v 47 kw. year 2003 Within a year, there were two errors repeatedly: 17811 Deviation EGR System Regulation Intermittent P1403-35-10 16804 Catalyst System Efficiency Below Threshold Bank 1 Intermittent P0420-35-10 After repeated deletions and advice like "the car has no need to change anything" or lambda probe, we switched to a different approach. I immediately scanned after the appearance of "check engine" and the error appears only 16804. I did all the tests in the service manual (073,028,034,046,043 channels) and are OK, only once in channel 46 "CAT B1 NOT OK. " I reset and I gave CAT B1 and retest OK (value of field 3 is 0.74 so it's OK). So all tests (EGR, L1, L2, CAT) are OK and all parameters are as in the manual but the error still occurs. Maybe you know more than me! In a single channel (075) I did not start the test. He said that to accelerate the speed 5 times max. but not started. After reset the EGR and throttle last summer we went 1500 km without appearing error. In this winter, once, did not want to reset the EGR. It was planned to change the EGR. Wait a cue from you! Thanks!

Thanks for the reply. Otherwise the car will behave normally (5.8% until 7% per 100km) and not as happens when the sound does not work.

I checked the EGR and it is OK. I checked the two lambda sound (bank 1 and bank 2) and I find that bank 1 does not heat over 30 degrees. After, I kept the engine at 2000 rpm to 4000 rpm the temperature increased by 5 degrees, but still "not working" (not change the values of voltage 1.2). What do you think? Sorry I posted still here. Overil som EGR a je to OK. Overil som si dve lambda zvuk (banka 1, banka 2) a zistil som, že banka 1 nie je teplo nad 30 stupňov. Potom, čo som držal motor pri 2000 ot / min až 4000 ot / min teplota zvýšila o 5 stupňov, ale stále "nefunguje" (nie meniť hodnoty napätí 1,2). Prepáč, že som vyslaný ešte tu. Čo si myslíte?

Hello, I have a Skoda Fabia 1.2 12V (Motorcode (6Y) SEAZQX01) and on board appeared yellow check engine light. Errors are: 17811 EGR System Regulation Deviation P1403-35-10 Intermittent 16804 Catalyst System Bank 1 Efficiency below Threshold P0420-35-10 Intermittent I reset several times but still comes back. Some say that gasoline is to blame others say it should be changed lambda sonde. The error reappeared and now I have the same error: If I reset the EGR, the error occurs after 1500 km else 200-300 km and not aftel 200-300 km. Now I am convinced he is the EGR. The service tested EGR, CAT and Lambda sensor and said they are OK. It may be from driving in the city or driving with 2000-2500 rpm (3th gear). Any suggestions? preložiť Dobrý deň, Mám Škoda Fabia 1.2 12V (Motorcode (6Y) SEAZQX01) a na palube sa objavil žltý kontrolná žiarovka motora. Chyby sú: 17811 EGR systém nariadenia odchýlka P1403-35-10 Prerušovaný 16804 Catalyst systému banky 1 Účinnosť pod prah P0420-35-10 Prerušovaný I reset niekoľkokrát, ale ešte vráti. Niektorí hovoria, že benzín je zvaliť vinu na ostatní hovoria, že to by malo byť zmenené lambda sondy. Chyba sa objavil, a teraz mám rovnakú chybu: Ak som reset EGR, dôjde k chybe po 1500 km ešte 200 do 300 km a nie aftel 200 do 300 km. Teraz som presvedčený, že je EGR. Táto služba skúša EGR, CAT a Lambda senzor a povedal, že sú v poriadku. To môže byť z jazdy v meste, alebo jazdy s 2000-2500 ot / min (3. kolo). Nejaké návrhy?