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#1
15th August 2016, 08:38 PM
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Those beloved fault codes again; 17972,17966,17521
Good evening
 Just back from a 1000 mile trip, and even though the car felt mostly ok, I felt it lacked some power now and then No lights in the dash but the fault codes when running VCDS below. 3 Faults Found: 17972 - Throttle Actuator (J338) P1564 - 35-10 - Under-Voltage during Basic Setting - Intermittent 17966 - Throttle Actuator (G186) P1558 - 35-10 - Electrical Malfunction - Intermittent 17521 - Oxygen (Lambda) Sensor; B1 S1 P1113 - 35-10 - Internal Resistance too High - Intermittent Readiness: 0000 0000 Just to mention that my MAF is only a few months old (OEM PART) 17972 : I have done Throttle adaptation without any luck. I did look at my TB readings and find them a bit odd. TV Sensor 1 16% (should be between 0-10 it says) TV Sensor 1 at WOT is "only" 85% Is my TB about to go on a permanent vacation?  17966 Same as the above? (found nothing on the forum for this code) 17521: Broken O2 pre-cat sensor? UK Driver or passenger side? Any way to read meas.block to see if one is failing? All tips apprecaiated
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2003 Daytona Grey RS6 2000 Silver S8 2005 A6 1.8TQ Premium 1993 Audi S4 2.2 TQ MTM 330 (my first love!) 
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#2
15th August 2016, 09:39 PM
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Quote:
__________________
2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II HeadlightsMy DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds
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#3
16th August 2016, 12:18 AM
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From my dodgy idle thread:
Quote:
 Might be worth a scan of the wiring diagrams to see if the TB and B1S1 O2 sensor share any wiring. Bad ground maybe?
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#4
18th August 2016, 06:38 PM
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Now we are down to 2 fault codes. 17966 has misteriously dissapeared..
2 Faults Found: 17972 - Throttle Actuator (J338) P1564 - 35-10 - Under-Voltage during Basic Setting - Intermittent 17521 - Oxygen (Lambda) Sensor; B1 S1 P1113 - 35-10 - Internal Resistance too High - Intermittent Snipped a few shots from VCDS. Lambda values seems fine to me? Is my voltage to low?
__________________
2003 Daytona Grey RS6 2000 Silver S8 2005 A6 1.8TQ Premium 1993 Audi S4 2.2 TQ MTM 330 (my first love!)
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#5
18th August 2016, 06:42 PM
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How often/when do you clear the fault codes and how soon/when do they reappear?
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".  (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one!  Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course.  (internal dimming mirror added later)1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! 
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#6
19th August 2016, 04:00 AM
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are your manifold flaps operating ok? have you checked they are not seized and or the linkages are working correctly and not broken on the actuators?
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Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#7
19th August 2016, 05:22 AM
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The lambda error is for the heating element, so it takes a minute or 2 longer for it to heat up and start working. I would not worry about it at all.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#8
19th August 2016, 05:13 PM
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Hi.
Flaps are working as the should. Nor sure how quickly the codes return. Was unable to get them to return by idling/reving it in the driveway last night. On another trip this weekend with the family. so i'm gonna check tonight when we arrive at our destination if the codes are back I do see that the rear bumper og trunk is "covered" in soot..(not from oil) Never ever seen this before.
__________________
2003 Daytona Grey RS6 2000 Silver S8 2005 A6 1.8TQ Premium 1993 Audi S4 2.2 TQ MTM 330 (my first love!)
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