Question about 2000 Harley Davidson FLHTCUI Electra Glide Ultra Classic

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Engine light on/off sporadically while riding. 2002 Ultra Classic. Fuel hoses in tank just replaced and oil pressure good. Possible oxygen sensor??

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You don't have that on a 2002. Do you have a power commander on it? Sounds typical of the older style power commander ( IIIr ) one thing to pay attention to is does it do it under load? If it's not showing any historic codes and the bike rides fine, and you have a power commander 3r I wouldn't worry. It's normal. The older power commander lies to the ecm. Sometimes it gets confused and kind of glitches ( that's where the light comes from ) but if it has running issues to I would take it to a shop to find out what the codes are and go from there.

Posted on Jun 27, 2009

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1998Pontiac Bonneville check engine light is on Code p0171 how can I fix this


  • Bank 1 Oxygen sensor fault: Possible causes:
  • The MAF (Mass Air Flow) Sensor is dirty or faulty
    Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
  • There could be a vacuum leak downstream of the MAF sensor
  • Possible cracked vacuum or PCV line/connection
  • Faulty or stuck open PCV valve
  • Failed or faulty oxygen sensor (bank 1, sensor 1)
  • Sticking/plugged or failed fuel injector
  • Low fuel pressure (possible plugged/dirty fuel filter!)
  • Exhaust leak between engine and first oxygen sensor
  • Solutions:


  • Solutions:


    S

    Jul 20, 2014 | Cars & Trucks

    1 Answer

    I have a vw golf git 1.8l 4 cylinders . My engine light is on and the error code I get is p0172. How do I get it fix


    Basically this means that an oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1

    A code P0172 may mean that one or more of the following has happened:

    The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
    There could be a vacuum leak.
    There could be a fuel pressure or delivery problem

    Possible Solutions

    Inspect all vacuum and PCV hoses, replace if necessary
    Cleanthe MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
    Inspect fuel lines for cracks, leaks, or pinches
    Check the fuel pressure at the fuel rail
    Check the fuel injectors, they may be dirty. Use fuel injector cleaner or get them professionally cleaned/replaced.
    Check for an exhaust leak before the first oxygen sensor (this is unlikely to cause the problem, but it is possible)

    Dec 07, 2012 | Cars & Trucks

    1 Answer

    I have an '02 VW Cabrio that is giving me random 171 and occasional 102 OBD codes. I looked for and found a split hose near the air filter housing and replaced. I've not found any others with...


    1st have you replaced the O2 sensor? Here is the technical stuff about this fault code
    OBD 2 fault code P0171 VOLKSWAGEN - Fuel control System To lean engine cylinder bank number #1.
    Possible causes:
    Possible causes- Intake air leaks, spray propane around the intake manifold gasket and all vacuum connections and listen for a change in the engine idle speeds, any change indicates a leak.
    - Faulty front heated oxygen sensor (a common cause if the car has over 50,000 miles on it)
    - Ignition misfiring
    - Faulty fuel injectors
    - Exhaust gas leaks
    - Incorrect fuel pressure Hook up a fuel gauge and make sure the fuel pressure is good/in specs under a load.
    - Faulty Mass Air Flow (MAF) sensor
    - Incorrect Positive Crankcase Ventilation (PCV) hose connection

    Oct 02, 2011 | 2002 Volkswagen Cabrio

    1 Answer

    MY 2002 ULTRA CLASSIC JUST LOOSES POWER AND QUITS RUNNING AND LOOSSES POWER AFTER RIDING IT FOR 10 TO 15 MILES . I SHUT THE IGNITION OFF FOR 5 10 MINUTES IT FIRES RIGHT UP THEN SAME THING JUST SHUTS DOWN ....


    Hi Mike, and the usual suspects are:
    1. Severely discharged or damaged battery.
    2. Loose, corroded or broken battery cable.
    3. Alternator not charging or below normal rates.
    4. Failed ignition coil, ignition/electronic module.
    5. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor.
    6. Faulty ignition switch.
    7. Water or dirt in fuel system, carburetor or filter.
    8. Fuel tank vent system plugged or gas cap not venting.
    9. Fuel tank empty.
    10. Fuel valve vacuum line broken or carburator vent line closed off.
    11. Restricted, blocked or kinked fuel line.
    12. Failed fuel pump, pressure regulator and or fuel injectors.
    For a prime suspect please visit website below. Good luck and have nice day.
    Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

    Sep 25, 2011 | 2002 Harley Davidson FLHTCUI Electra Glide...

    1 Answer

    P0171 just replaced mass air flow


    p0171 is system to lean ( bank 1 ). did you turn off check engine light with a scanner! if not go to auto-zone and they will erase it for free, then you can see if light stays off. There could be a vacuum leak downstream of the MAF sensor.
  • Inspect all vacuum and PCV hoses, replace if necessary
  • Check for a dirty fuel filter and proper fuel pressure. Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. good-day!!
  • Aug 18, 2011 | 2002 Toyota RAV4

    2 Answers

    What does error code p0172 and p0174?


    P0172 - Fuel Injection System Too Rich Bank 1 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
    - Excessive Fuel Consumption
    Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connec
    Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem.



    P0174 - Fuel Injection System Too Lean Bank 2 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
    - Excessive Fuel Consumption
    Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection
    Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem. Bottom line possible defective Mass airflow sensor and or O2 sensor in cylinder bank number two.

    Feb 21, 2011 | 1998 Ford Expedition

    1 Answer

    I have a 04 expedition the engine light came on the code read po171 and po174 it die out when I'm at a red light but cranks back up missing bad when it warms up


    P0171 - Fuel Injection System Too Lean Bank 1
    Possible Causes:
    - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection

    P0174 - Fuel Injection System Too Lean Bank 2
    Possible Causes:
    - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection

    Jan 14, 2011 | 1998 Ford Expedition

    1 Answer

    Very high fuel consumption on 2002 Honda Odyssey


    transmission slipping dragging brakes.timing off worn timing belt .bad spark plugs + wires +coil.defected valves and worn cam shaft.use scanner to check oxygen sensor. run engine 5 minutes look at scanner . should read closed loop . if read open loop replace oxygen sensor.

    Mar 28, 2009 | 2002 Honda Odyssey

    1 Answer

    2002 Ultra Classic cuts off when riding and idling after 10 mins


    Hi Michaelford2, you may need an alarm reset, and the usual suspects are:
    1. Severely discharged or damaged battery.
    2. Loose, corroded or broken battery cable.
    3. Alternator not charging or below normal rates.
    4. Failed ignition coil, ignition/electronic module.
    5. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor.
    6. Faulty ignition switch.
    7. Water or dirt in fuel system, carburetor or filter.
    8. Fuel tank vent system plugged or gas cap not venting.
    9. Fuel tank empty.
    10. Fuel valve vacuum line broken or carburator vent line closed off.
    11. Restricted, blocked or kinked fuel line.
    12. Failed fuel pump, pressure regulator and or fuel injectors.
    For a prime suspect please visit website below. Good luck and have nice day.
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    Feb 11, 2009 | 2002 Harley Davidson FLHTCUI Electra Glide...

    1 Answer

    Code 0440


    P0440 onepx.gif EVAP Control System Malfunction onepx.gif onepx.gif onepx.gif onepx.gif onepx.gif onepx.gif onepx.gif onepx.gif Possible Causes onepx.gif Setting Conditions onepx.gif onepx.gif onepx.gif onepx.gif
    • Charcoal canister is clogged, loaded with fuel or with moisture
    • Fuel filler cap missing, loose (not tightened) or the wrong part
    • Fuel tank over-fill check valve cracked or damaged
    • Fuel tank seal leaking, fuel tank cracked or damaged/leaking
    • Fuel vapor hoses/tubes blocked or restricted, or fuel vapor control valve tube or fuel vapor vent valve assembly blocked
    • Vacuum hose or tubing cracked, damaged or disconnected
    • Vapor Pressure sensor incorrectly installed
    • PCM has failed
    onepx.gif Engine started cold (ECT sensor signal less 86�F), engine runtime over 20 minutes in closed loop, vehicle driven to a speed of 55-60 mph, and the PCM detected the fuel tank pressure indicated the same value as the atmospheric pressure in the EVAP Monitor test.
    This code sets in 2 Trip(s).First I would try making sure the gas cap is tight. You need to give it 2 trips before it may reset. The other choice would be to replace it, Cheaper than spending money on a professional.

    Jan 25, 2009 | 2002 Lexus IS 300

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