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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. P0171 and P0174

    Range Rover Sport / L320
    P0171 -System too lean bank 1 P0174 System too lean bank 2 2006 RR HSE. 113,000 CEL illuminating. Here is what I've already had repaired: in the last month MAF sensor All O2 Sensors (4) Thermostat Housing Egr Valve Egr valve gaskets 2 spark plugs oil change Car drives Rough...
  3. 2006 Range Rover P0171 P0174 after AC compressor install

    Range Rover Mark III / L322
    Had my AC compressor replaced in my 2006 RR HSE last week. Since then, the CEL has been on, and the codes P0171 and P0174 come up on my scanner. I have reset them, but the CEL comes back on not too long after a reset. When I brought the car home from the repair shop, the CEL came on so I popped...
  4. Fault Codes P0171 P0174 and P0441

    Range Rover Sport / L320
    Hi Everyone, I ask for your opinion because I have a complicated problem. I have a RR sport 2006 4.2 S/C and for 5 months I have the following fault codes P0171 System too lean bank 1 (intermittent) P0174 System too lean bank 2 (intermittent) P0441 Evaporative Emission Control System...
  5. P0171 / P0174 codes

    Range Rover Sport / L320
    Hi, I am hoping the experts on the forum can give me some advice on a couple of "issues"! RRS 4.2SC with 108k on the clock. All four O2 sensors replaced yet still giving the above codes. Reset the codes then approx 50 miles later they reappeared (as stored codes) with pending codes for misfire...
  6. Almost no power and codes p0171 p0174

    Range Rover Mark III / L322
    Hey I have 2004 Range Rover and just started having trouble. I was sitting idle in a parking lot then all of a sudden the truck started shaking and then as I tried to drive around flooring it would barely go 5 mph. I kept driving and it would go faster but low speed acceleration the rover was...
  7. heard a "pop" sound from engine while driving, check engine light on with P0171 P0174

    Range Rover Mark III / L322
    heard a "pop" sound from engine while driving, check engine light on with P0171 P0174 Hi all I was getting off work one day last week, started my 2006 4.4 HSE, pulls out of the parking lot and suddenly heard a pretty obvious "pop" sound from the front of the car, thought I roll over a bottle or...
  8. P0174 - 2006 Range Rover HSE Any Pointers?

    Range Rover Mark III / L322
    Hello Everyone, My 06 Range Rover HSE is up to its schenanigans again. It is only throwing the error code P0174, and there is a slight odor of what smells like exhaust that comes through the vents and shows up intermittently when at a stop light. I will be replacing all my spark plugs (Was...
  9. Codes p0171 and p0174

    Range Rover Mark III / L322
    It never ends with this truck 2009 RR supercharged. I'm my way home form work those 2 codes came on what do I do?
  10. P0128, p0171, p0174, p0175

    Range Rover Mark III / L322
    I have a 2006 RR HSE non supercharged. Approximately 83,000 miles. Everything seemed to be going fine, and then bam the CEL came on. Went by the auto parts store and the codes P0128, P0171, P0174 and P0175 were all coming up. Is their a likely culprit that could cause all these codes to pop...
  11. 2006 Range Rover Supercharged Pre Purchase Issues Bank 1 and 2 Lean

    Range Rover Mark III / L322
    2006 Range Rover Supercharged Pre Purchase Issues Bank 1 and 2 Lean Hi everyone after owning an 03 Discovery for nearly 10 years I decided to upgrade to a Range Rover Supercharged full size 80K miles. The dealer needed to install a new T-Stat and it all has gone downhill since. After the new...
  12. Codes P0171 and P0174 too lean

    Range Rover Mark III / L322
    On vacation in Cape Cod and the CEL came on after a five hour drive. Was fine the whole way. Stopped for breakfast. Got back in the car, started it up and noticed a puff of smoke out of the tail pipe. Never saw that before, then the CEL. Scanned it with an OBD II and got those codes. I have a...
  13. Emissions failing, apparently. P0171, P0174

    Range Rover Mark II / P38
    So on the way home today, My SES light came on, and I scanned the codes. "Fault codes associated with the evaporative emissioncontrol system are listed below: P0171 - Multiplication fuelling adaption (Max.) exceeded lean limit - LH bank P0174 - Multiplication fuelling adaption (Max.) exceeded...