Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Welcome to OOF

Pages: [1]   Go Down

Author Topic: 91 O2 Sensor 2 Circuit Voltage High  (Read 776 times)

0 Members and 1 Guest are viewing this topic.

MutantCav

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Gainsborough
  • Posts: 2716
  • Smoke me a kipper - I'll be back for Breakfast
    • View Profile
    • Free Giffgaff Sim With £5 Free Credit
91 O2 Sensor 2 Circuit Voltage High
« on: 24 February 2009, 10:18:05 »
Ok the facelift (2.5 CDX) I just got is coming up with code 91...O2 Sensor is the Lambda sensor right?? So potentially what does this code mean exactly...car is struggling to start and engine sounds like a bag of spanners despite having had cambelt kit done 19k ago and just having been serviced...before I condemn the car to history lets see if it can be sorted as its a nice car and I know the engines a known goodun as it came from my old estate and ran beautifully in there  :y
« Last Edit: 24 February 2009, 10:19:00 by ShieldOfSteel »
Logged
http://giffgaff.com/orders/affiliate/tvpromo Get a free giffgaff sim running on O2 network
£5 free credit on first top-up
£5 gives you 60 mins, 300 texts & unltd calls and texts to anyone else on giffgaff

RobG

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol
  • Posts: 13831
  • I might have a link, pic or part number for that
    • 16 plate Mokka. Vivaro
    • View Profile
Re: 91 O2 Sensor 2 Circuit Voltage High
« Reply #1 on: 24 February 2009, 14:26:43 »
 An air leak in the intake or exhaust manifold or even a fouled spark plug,  will cause the lambda sensor to give a false signal. Poor fuel economy, elevated CO and HC emissions, poor idle, and/or hesitation during acceleration are also typical of a failing lambda :y
Logged
All that is necessary for the triumph of evil is that good men do nothing.

UPVC windows/doors/fascias/soffit/gutters supplied/fitted

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36415
    • Jaguar XE 25t, Westfield
    • View Profile
Re: 91 O2 Sensor 2 Circuit Voltage High
« Reply #2 on: 24 February 2009, 16:20:25 »
A faulty Lambda sensor won't affect starting although air leaks, etc. can affect the Lambda sensor reading so i would check the basics first - induction air leaks, ICV, EGR, plugs, etc.

Kevin
Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/

MutantCav

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Gainsborough
  • Posts: 2716
  • Smoke me a kipper - I'll be back for Breakfast
    • View Profile
    • Free Giffgaff Sim With £5 Free Credit
Re: 91 O2 Sensor 2 Circuit Voltage High
« Reply #3 on: 24 February 2009, 16:35:08 »
Good stuff, I'll have a look at it soon as...

Guy reckons it was running fine, he sold it and it started playing up as it drove away down his street...now thats bad luck!

Drove it round to corner today. it fired up rather reluctantly...needed some throttle to get it started then idled ok but up at 1000rpm although cold engine so may well have settled back down to 500rpm after a while...runs ok but not really responding to throttle really...accelerates slightly but generally not much, even flooring it has practically no effect on acceleration
Logged
http://giffgaff.com/orders/affiliate/tvpromo Get a free giffgaff sim running on O2 network
£5 free credit on first top-up
£5 gives you 60 mins, 300 texts & unltd calls and texts to anyone else on giffgaff

JamesV6CDX

  • Omega Queen
  • *****
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 16640
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: 91 O2 Sensor 2 Circuit Voltage High
« Reply #4 on: 24 February 2009, 18:24:00 »
Is that the only code?
Logged

MutantCav

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Gainsborough
  • Posts: 2716
  • Smoke me a kipper - I'll be back for Breakfast
    • View Profile
    • Free Giffgaff Sim With £5 Free Credit
Re: 91 O2 Sensor 2 Circuit Voltage High
« Reply #5 on: 24 February 2009, 20:03:13 »
Yes mate, just the 91...
Logged
http://giffgaff.com/orders/affiliate/tvpromo Get a free giffgaff sim running on O2 network
£5 free credit on first top-up
£5 gives you 60 mins, 300 texts & unltd calls and texts to anyone else on giffgaff

eddie

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Cardiff
  • Posts: 352
    • View Profile
Re: 91 O2 Sensor 2 Circuit Voltage High
« Reply #6 on: 24 February 2009, 21:46:20 »
Does it sound like misfiring? Could be a knackered lead or Dis pack?

eddie
Logged

JamesV6CDX

  • Omega Queen
  • *****
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 16640
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: 91 O2 Sensor 2 Circuit Voltage High
« Reply #7 on: 24 February 2009, 22:44:39 »
Sorry to state the obvious, but just to be sure (as you stated it's a bag of spanners), have you checked:

Oil level
Cambelt timing/tension/condition
Compression
Spark plugs/Leads
Logged
Pages: [1]   Go Up
« previous next »
 

Page created in 0.032 seconds with 18 queries.