Omega Owners Forum - fault code P0170

birdman

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Posts: 28
bristol
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Drives: 03 gls 2.2 petrol manual estate

fault code P0170
13. Aug 2011 at 19:14

Omega has driven for a week (200miles)

with no problems or mil light,today the mil light (not spanner light) came on,still driving like a gem,read code to be P0170 fuel trim bank 1,cleared ok, i know what the code means but why is it coming up? there are no vacuum leaks or exhaust leaks,car has had new oxygen sensors,maf sensor and cam sensor (all genuine vaux) Angry

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ndmv6 Newbie Offline Posts: 42 Drives: omega 2.2 cd auto	Re: fault code P0170 Reply #1 - 14. Aug 2011 at 09:24 i had the exact same problem with mine,i changed cam sensor air flow meter both lambda sensors new exhaust manifold and gasket,as old one had cracked new rocker cover gasket,as oil had soaked the plug wells. then eventually,fitted a new cat, cleaned out breathers and throttle a very expensive problem solved.
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birdman Newbie Offline Posts: 28 bristol Gender: Drives: 03 gls 2.2 petrol manual estate	Re: fault code P0170 Reply #2 - 14. Aug 2011 at 22:26 cheers for that,ive done everything you have except the cat! shes been ok today!
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JamesV6CDX Omega Baron Offline Posts: 3202 Gloucestershire Gender: Drives: 2002 (02) 3.2 Retail MV6 in Star Silver with Leather	Re: fault code P0170 Reply #3 - 14. Aug 2011 at 23:11 I'm not far away, and can read live data, birdman ...
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birdman Newbie Offline Posts: 28 bristol Gender: Drives: 03 gls 2.2 petrol manual estate	Re: fault code P0170 Reply #4 - 18. Aug 2011 at 19:52 mil light on again code P0170,freeze frame data as follows DTCFFRZF P0170 FUELSYS1 CL FUEL SYS2 N/A LOAD-PCT(%) 44.3 ETC(.C) 88 SHRTFT1(%) 14.1 LONGFT1(%) 10.2 RPM 2251 VSS(KM/H) 48 Can anyone tell what is causing this code to come up.I can find no vacuum leaks!!
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birdman Newbie Offline Posts: 28 bristol Gender: Drives: 03 gls 2.2 petrol manual estate	Re: fault code P0170 Reply #5 - 22. Aug 2011 at 20:36 does anybody know if the fuel trims are high on my previous post,if so what causes it?,ive tried everything!!!!
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chrisgixer

Omega King

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Black ones are faster.

Posts: 14570
Wokingham
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Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.

Re: fault code P0170
Reply #6 - 22. Aug 2011 at 22:00

birdman wrote on 18. Aug 2011 at 19:52:

mil light on again Angry

code P0170,freeze frame data as follows
DTCFFRZF P0170
FUELSYS1 CL
FUEL SYS2 N/A
LOAD-PCT(%) 44.3
ETC(.C) 88
SHRTFT1(%) 14.1
LONGFT1(%) 10.2
RPM 2251
VSS(KM/H) 48

Can anyone tell what is causing this code to come up.I can find no vacuum leaks!! Cheesy

No.
SHoRT term Fuel Trim 14.1%
LONG term Fuel Trim 10.2%

... Are missing the all important + or - to indicate rich or lean trim level. It's the long term figure that's important, as it takes an average over a period.

As I understand it, if it was +10.2% for example, that would mean it was adding injector duration due to a lean condition. And obviously vice versa for a minus figure.

Although coming from a v engine, and seeing the light tripped from + or - 24% and above, those figures don't look massively ott imle...

but you really need some input from one of the tech2 guys on here tbh... Undecided

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birdman Newbie Offline Posts: 28 bristol Gender: Drives: 03 gls 2.2 petrol manual estate	Re: fault code P0170 Reply #7 - 22. Aug 2011 at 22:22 thanks,it doesnt show + or - on my Autel MS509,but assume its + as sometimes the short term ft shows a minus sign.
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chrisgixer

Omega King

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Black ones are faster.

Posts: 14570
Wokingham
Gender: male

Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.

Re: fault code P0170
Reply #8 - 22. Aug 2011 at 22:33

birdman wrote on 22. Aug 2011 at 22:22:

thanks,it doesnt show + or - on my Autel MS509,but assume its + as sometimes the short term ft shows a minus sign.

If that's the case then it's adding fuel as the lambda is seeing a lean condition.

First thought Air leak, but there are non you say...? Tried the carb cleaner trick? Does it hunt?

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birdman Newbie Offline Posts: 28 bristol Gender: Drives: 03 gls 2.2 petrol manual estate	Re: fault code P0170 Reply #9 - 22. Aug 2011 at 22:46 ive had a really good look around and all vac pipes seem sound,ive cleaned out the throttle body,when you put your foot down it does seem to be hesitant,idles perfect!it had a genuine maf and both lambda sensors last year fitted by previous owner.
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chrisgixer Omega King Offline Black ones are faster. Posts: 14570 Wokingham Gender: Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.	Re: fault code P0170 Reply #10 - 22. Aug 2011 at 22:52 Could be anywhere from post Maf.
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Proz

Omega Baron

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Cupar , Fife , Scotland
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Drives: 2003 2.2 CD Petrol Saloon

Re: fault code P0170
Reply #11 - 22. Aug 2011 at 23:03

I suffered this problem on my 2.2 petrol for a long time ... im trying to find the posts i had on it but the search thing is not finding them .
Live data readings would be a real bonus if you can find someone with Tech II or Opcom etc and i could compare them with my current readings ( no mil lit ) to see whats different .
Im 99% positive mine was cured with new maf however , but you say you have changed it so id be interested in comparing live data .
HTH

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OP-Com and OBD2 Reader

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birdman Newbie Offline Posts: 28 bristol Gender: Drives: 03 gls 2.2 petrol manual estate	Re: fault code P0170 Reply #12 - 28. Aug 2011 at 22:45 Hi all, Fuel trim fault P0170 still activating randomly,freeze frame always shows short term fuel trim as 14.1% and long term fuel trim as 10.2%,its driving me mad and running out of ideas! does anyone have any ideas?
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pscocoa Omega Knight Offline Posts: 1299 Sandhurst Berkshire Gender: Drives: Elite 3.2 V6 Irmscher, Phaeton V6 Diesel, Signum 1.9cdti	Re: fault code P0170 Reply #13 - 28. Aug 2011 at 23:09 have you refuelled since problem started or maybe just before problem started (and have you refuelled since??)
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birdman Newbie Offline Posts: 28 bristol Gender: Drives: 03 gls 2.2 petrol manual estate	Re: fault code P0170 Reply #14 - 28. Aug 2011 at 23:30 ive refuelled a number of times,just changed the fuel filter which looked like it had never been changed! 140k too!
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