Chris R Posted July 10, 2017 Posted July 10, 2017 Hi, I was wondering if anyone out there could point me in the right direction with a lamda sensor fault I'm getting on my Audi A3 2.0TDI 170 2007. It's causing the EML to light up constantly and after replacing the sensor, the light is still showing. In fact it came back on immediately. There were also a few voltage related faults which I've cleared and they haven't come back on as yet. I was wondering it all this was battery related or if the lambda sensor fault is an issue of it's own. The DPF was removed by a previous owner a couple of years ago. Don't know if this could have something to do with it. Any help would be much appreciated. Thanks Address 01: Engine Labels: 03G-906-018-BMN.clb Part No SW: 03G 906 018 DN HW: 03G 906 018 DN Component: R4 2.0l PPD1.2 G 1247 Revision: --H32--- Serial number: AUX7Z0FNFNG07A Coding: 0000078 Shop #: WSC 66565 257 00032 VCID: 74E73A5B174EF4BE80B-8021 1 Fault Found: 009766 - Linear Oxygen (Lambda) Sensor B1 S1 Pump Current Trim Circuit P2626 - 008 - Open - Intermittent - MIL ON Freeze Frame: Fault Status: 10101000 Fault Priority: 2 Fault Frequency: 32 Reset counter: 40 Mileage: 232086 km Time Indication: 0 Date: 2017.07.01 Time: 13:24:30 Freeze Frame: RPM: 1312 /min Torque: 0.0 Nm Text: 31.88 Text: -0.04 V Voltage: 4.16 V Text: 784 C (no units): 108.0 Readiness: N/A
Brad-B5 Posted July 10, 2017 Posted July 10, 2017 Hi Chris Hopefully someone with more experience in this can help but I will just like to add my 2 pence, if you suspect it being a possible battery issue could you try to test to make sure that AMP's are okay? Regards Bradley
cliffcoggin Posted July 10, 2017 Posted July 10, 2017 I find it hard to believe a brand new sensor is faulty so the chances are that the fault is elsewhere. Whether that fault is a loose connection in the sensor wiring, a bad earth, or something entirely unrelated I do not know, but in your position I would start by checking the sensor wiring.
Magnet Posted July 10, 2017 Posted July 10, 2017 Hello Chris, Although it might be difficult to believe that a new lambda sensor may not be up to the mark, I would first ask whether the sensor used was a genuine VAG one or a so called genetic variant. It will probably help to know this before delving further into other possibilities. Kind regards, Gareth.
Chris R Posted July 10, 2017 Author Posted July 10, 2017 Thanks for the replies gents. The sensor I used was this one from eurocarparts by FAE http://www.eurocarparts.com/ecp/c/Audi_A3+Sportback_2.0_2007/p/car-parts/exhausts/car-body-parts-and-car-exhaust/lambda-sensor/?710445691&1&97395a7b2bb23c4425f58b098d974e8a46e1f607&000210 I've tried to look at the wiring but I think I'm going to need to strip some bits out of the way to get a proper look. As far as testing things, my ability is stuck at taking things off and putting things on but I know some people who could show me a bit more. I suppose I was just hoping someone might have come across the same problem. Does anyone think the DPF being removed could have anything to do with it?
Chris R Posted July 11, 2017 Author Posted July 11, 2017 Hi all, Got 2 new codes in addition to the first one now. 000304 - Oxygen (Lambda) Sensor B1 S1 P0130 - 006 - Malfunction in Circuit - Intermittent - MIL ON Freeze Frame: Fault Status: 10100001 Fault Priority: 1 Fault Frequency: 19 Reset counter: 40 Mileage: 232632 km Time Indication: 0 Date: 2017.07.07 Time: 00:36:41 Freeze Frame: RPM: 864 /min Torque: 56.0 Nm Bin. Bits: 00001010 Voltage: 12.240 V Voltage: 2.50 V 5.85 % (no units): 196.0 000000 - SAE - Reserved by Document ISO 15031-6 P0000 - 009 - 2005 - Intermittent Freeze Frame: Fault Status: 00100100 Fault Priority: 0 Fault Frequency: 18 Reset counter: 40 Mileage: 232632 km Time Indication: 0 Date: 2017.07.07 Time: 00:36:47 Freeze Frame: RPM: 800 /min Torque: 72.0 Nm Text: Kein Messwert verfuegbar Text: Kein Messwert verfuegbar Text: Kein Messwert verfuegbar Text: Kein Messwert verfuegbar Text: Kein Messwert verfuegbar Raw, Form. N/A: 000 000 000
Magnet Posted July 12, 2017 Posted July 12, 2017 Hello Kev, OK, so you have fitted an aftermarket lambda sensor, and although I've seen more generic aftermarket ones where you even have to make up your own connectors, the chances of it being sub standard as new is greater than if you went with a VAG. Code readings are of course, now an essential part of the whole diagnostics of trouble shooting. Being more from the old school of basic logical thought and problem solving means I'm not going to be of much use it you, but I would point out that you have to have a clear mind when interpreting these codes, since they can be either the basic cause, or they can be as a result of the effect of the basic cause. Not very well explained but it's the old cause-and-effect senario. The fact that you have a fault code relating to a specific component does not necessarily mean that component is at fault. The fault could be with another component which influences the component which shows the fault code. I'm not sure that is any better explained , but.....! Once you are satisfied all the wiring and associated connectors are sound, would it be worth returning this sensor to our friends at Euro Car Parts on the basis that it is faulty, and request a replacement, or your money back and getting a VAG one. Kind regards, Gareth.
Chris R Posted July 12, 2017 Author Posted July 12, 2017 OK,thanks. I get the fault codes not necessarily pointing to the exact problem but would it mean that even if the sensor is good, a wiring fault could be telling the car that it isn't and therefore causing further problems, as in problems that may be caused if the sensor was faulty? Thanks Chris
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