Star7

Sure ! 77000 km. Urban usage. Spark plugs were changed 2 years ago at 60000 km. Clean air filter fitted. The spark plugs were changed for the "advanced inspection" ( as per Skoda workshop manual) of the car 2 years ago at 60000 km because there was also an excessive fuel consumption and I guess it was required by the "advanced inspection". I could change again the spark plugs but I find quite surprising to do so after only 17000 km since the last change. I may have used some unleaded 95-E10 instead of unleaded 95-E5. Could it be the reason my spark plugs are not functioning well ? I guess I should have other defaults than a P2096 OBD2 alert from the ECU in case of a misfiring ? Thanks.

Measuring 7 ohms for the heating resistor wires on both sensors with open wires Erratic/inconsistent 8- 110 mV 🥴 for the sensors wires even going 2000 rpm. Measurements are quite complicated and unreliable. I get the resistor from both sensors is good but the sensoring part is a shot in the dark for both sensors. I cannot believe I have both sensors gone mad at the same time ? Or is it possible ? Statistically does the rear sensor is more leading to faults than the forward one ? Thanks !

HI, My 2015 Skoda Fabia mk3 Combi 1.0 MPI fuel consumption is trough the roof (from around 5-6 l/100 km to 10 l/100 km) and I get a P2096 OBD2 default : POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1 I get the rear lambda sensor is really measuring too much oxygen in the post catalyst exhaust gases or the rear lambda sensor is defective. Cannot find any vaccum leak in the exhaust manifold from a visual inspection, and to be honest I don't have access to a smoke machine. Don't have access to VCDS nor a simple or advanced OBD scanner yet. I have access to a multimeter but no access to an oscilloscope ! The question is : should I go for a front or a rear lambda sensor change ? Thanks !