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  1. Another Person Stumped by P0171 and P0174 Lean Codes

    Range Rover Mark III / L322
    This is regarding a 2007 HSE with 190k miles. I'll start off by saying I have searched and read through every relevant post on this topic this website and google has to offer, so I'll ask a few different questions than what others have asked. I recently had my fuel pump fail (one day vehicle...
  2. fuel pressure? running lean bank 2

    Range Rover Sport / L320
    Hello, I am doing some trouble shooting try to figure out why my bank 2 is running lean. So when I was replacing the spark plugs I look all over the fuel rail and can not find a Schrader valve ANYWHERE other than the AC system to check my fuel pressure . and do not see if on the code scanners I...
  3. 2006 PO171 & PO174 Lean Codes

    Range Rover Mark III / L322
    Have a 2006 HSE. P0171 and P0174 showed up a about a month ago (at the same time). Got a smog need to pass in a couple weeks so have started to troubleshoot. After a bit of research, I think I've narrowed it to MAF and/or fuel supply. Here's why... 1) At IDLE long term fuel trims are around...
  4. Fuel Trim Issue

    Range Rover Sport / L320
    System too lean, --Short Term Fuel Trim 1 is 0.0 --Long Term Fuel Trim 1 is 15.62 --Short Term Fuel Trim 2 is -.78 --Long TermFuel Trim 2 is 18.75 Im pretty sure those numbers aren't right and I'm using way too much fuel. I had it smoke tested and the shop told me I had a vacuum leak in my EVAP...
  5. Chasing lean codes

    Range Rover Mark III / L322
    I've been having ongoing problems for the last 2 years that I still haven't solved. Currently I'm trying to figure out why I'm getting lean codes on 1 and 2 banks. At idle the LTFT is 18 and STFT is 0. At 2500 RPM LT drops to 10.2 on the 7.6 while STFT stays at 0. Last week when I checked...
  6. System to lean code and HDC fualt. MAF sensor or ?

    Range Rover Mark III / L322
    Gotta a 2006 hse 4.4 jag and 135k replaced the alternator in it last weekend and after driving it around it got a new Engine light. System to lean bank1 and bank2. So my question is could this be from the software needing updated or just another sensor to replace?? any advice is always appreciated.
  7. OBD Fault..#1 Bank running lean 2008 4.4

    Range Rover Mark III / L322
    I cleaned the MAF and then cleared the fault...fault will pop back up again...also as a result it has an idle issue where it will sometimes hunt for idle...i thought the MAF cleaning might have been the issue but I would have expected that it would have an effect on both banks... I did check...
  8. Does suspension fault need clearing with diagnostic tool?

    Range Rover Sport / L320
    Hi, I bought a RRS 2008 a month ago knowing there's a orange suspension fault sign which reads 'Vehicle lean when cornering'. The guy said it started to show up after he changed the wheels to 22 inches with low profile tyres and that it not not a problem. In some youtube videos it is suggested...
  9. Running Lean - Fuel Pump or Blockage?

    Range Rover Mark II / P38
    Getting pending codes P0174, P0171, P0130 & P0154. (Lean trim and O2 Sensor). Also ever since I've had the car it has misfired / vibrated at full throttle and high RPM. Using torque I can see the O2 sensors working fine, but the other day I managed to catch it misbehaving. Flooring it up a...
  10. New CEL and long time problem

    Range Rover Mark III / L322
    to start, I have a 2006 L322 HSE 4.4L non-sc, bought in New York if that matters, but in Maryland now, 152,000 miles. P174 and P171 Lean codes on banks 1 & 2, I have a pretty good understand of what this is telling me, excessive UN-metered air and/or not as much fuel as requested, etc. I do...
  11. Suspension Lean Issue

    Range Rover Sport II / L494
    Hi all, Two times in the past few weeks, I've been driving the RRS when it seems to go a bit lopsided. Kind of like the entire car is leaning hard (in this case to the left). Handling is extremely poor and 'floaty' when this happens too. Pretty dangerous IMO. Seems to go away itself. The car...
  12. Problems.. Lean codes now coolant.

    Range Rover Mark III / L322
    Happy holidays to you all! I have a 2006 L322. Not an SC. About a month ago had to replace the alternator and had the throttle body cleaned. At the time it was throwing the P - 0171/0174 codes. Mechanic cleaned the throttle body. I'm did notice the power increased a bit but my mileage dipped...
  13. Right lean overnight (with a twist).

    Range Rover Sport / L320
    Good day to all. As usual, every now and then when I go out in the morning, the Right side of my 2006 is leaning. The Rover folks at Al Faris here in Bahrain said I have to bring it in for a 'look-see'. - When I start the Rover, she balances out before I drive off. - Two days ago as I was...
  14. Running lean

    Range Rover Classic
    1994 UK model Soft dash 3.9 with cats. Really bad fuel economy under 12 mpg and running lean on the passenger side bank New Lambda sensors fitted and also run on another ECU Any ideas guys/girls Cheers
  15. Suspension fault vehicle lean when cornering

    Range Rover Sport / L320
    2007 RRS HSE , the above title come up on the dash the doors lock and open and the fault light comes on the Dash, also the radio and sat nav shut down and the hazards come on. I have been told it's a comms issue but having a problem finding the actual electrical fault. Any ideas or anyone had...
  16. 2006 RR HSE Lean Codes come and go

    Range Rover Mark III / L322
    Hi everyone; I recently bought (3 months ago)a 2006 RR HSE. 67K at the time now 74K. It had a trans sleeve leak which splattered tranny fluid all over the bottom and a radiator leak(must be very small as I didn't notice it) as per my first diagnosis from the dealer. The used car place I...
  17. Bank 1 too lean error code.

    Range Rover Mark III / L322
    Hi all. I have a 2006 RR HSE. I have been experiencing a recurring PO171 code. I've had my RR mechanic keep it for the day and he had advised that the truck is fine. Possibly the "winter fuel" was the problem. I've been running super per his advice to see if the issue would resolve but after...
  18. Body Roll / Body Lean L322

    Range Rover Mark III / L322
    Happy Holidays to all, I have a 2003 L322 and love it (of course.) I was wondering if any of my fellow owners have experienced excessive lean or body roll when going around corners at low speeds. I realize the vehicle is very heavy to begin with and all of that, but I was just wondering if any...
  19. System too lean at idle, bank 1

    Range Rover Evoque / L538
    The amber check engine light came on and my code reader showed P2187 -system too lean at idle bank 1. I cleared the code and it came back 2 days later. I scheduled with Momentum Land Rover who says I need a low pressure fuel pump. I hope to have it back today. As long as it was in for...
  20. Lean Burn?

    Range Rover Mark III / L322
    Hi all I have recently purchase a Range Rover Vogue 2004 everything working but engine management light keeps coming on showing codes P0174, P0171 & P056 which I believe state lean burning, the vehicle is on LPG. Can anyone advise as to the best way to cure these codes as they normally come on...