The P0170 code can range in seriousness. The best place to take your car for diagnostics is your local dealer - their technicians are factory-trained and know the common problems with the cars they service. In case the amount of the compensation value is extremely large The actual mixture ratio is too lean. Around the sensor, look for a crack. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. If no symptoms are associated with this code, then the driver may decide to hold off on the repair. There are no drive-ability issues with the car whatsoever.
Bryan I can find no reference to code P0170 as it pertains to Hondas. It runs like a top but wants to chug just a bit when cold, like its not getting enough gas. Expect to see at idle 3. Jul 15, 2010 I dont know where do you live, but honda civic 1992 don use carburator, they are fuel injection, you can have coolant temp sensor problem, or map sensor problem, run diagnose jumping the diagnose wires loated in the passenger side, kick panell close to the door wall, better get the repair book in the parts store to locate the conector ,and read how you can run the diagnosis Oct 05, 2008. They will undoubtedly slap on at least 15 bucks for shipping here, if they even ship here at all. I replaced the fuel pressure regulator which comes with a breather tube re-routing kit. Code P0171 indicates that a lean fuel condition has been detected, which could be a result of a bad , a clogged fuel filter, a dirty or faulty , a vacuum leak downstream of the mass air flow sensor, a faulty and many others.
First thing he came up with was that the catalytic converter was cracked. The leak may be due to an intake manifold gasket, throttle body gasket, vacuum line disconnected, your car has a vacuum operated engine mount, I have seen those go bad and cause a vacuum leak. Took me 20 min to put em in and my car running better than ever. After the repairs are made, the mechanic would reset the Check Engine Light and run the engine. Is this a common problem with the Hondas? The list of automotive Makes at the right edge of the screen. Are any of the vacuum lines or hoses disconnected? This is commonly located along the exhaust pipe. Also check ignition coils, cam and crank sensors, and oil sensor for leakage contributing to oil intrusion in wiring harness.
Any help would be greatly appreciated!!! If that has not happened then you may have a vacuum leak. I need to get my car inspected and it won't pass with a cel. Any help would be greatly appreciated!!! Once the car warms up, it runs like new with the exception of the check engine light. Does it remain the same or behaves poorly? The regulator spits out fuel from the vacuum line when disconnected. When did you last change your fuel filter? Tech notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. When accelerating normally in second gear, it seems more eager. Check engine light has not lit back up but the P0172 is now pending.
You would think the O2 would indicate rich at some point? Regardless if you have one of these air filters or not here is the fix: 1 Replace your airfilter. There are no drive-ability issues with the car whatsoever. The manual lists a whole bunch of possible causes of P0171. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. I have 298K miles on it. Best of Luck Bryan To solve this problem you have to understand how it occured. I think that it might be common for accords to throw the light on because my buddy who has a 98 v6 always has his pop up on him.
Leaking turbo pressure hoses could cause a rich condition. This is especially the case with Mercedes-Benz and Volkswagen and other European cars. Make sure there are no vacuum leaks at the intake manifold gaskets or tears in the air supply hose. Inspect the condition of crankcase vent hose under intake manifold and operation of check valve in the hose. If you reset the alarm, it does not re-trigger.
Ford has issued a technical service bulletin on this issue. I have noticed that it is more inclined to come on when I have others riding with me heavier load. Fixed it and reset the light. If the air fuel mixtue is too lean indeed, mis-firing will occur, unless it is an actual electronic and not a mechnical problem. Usually when the regulator is bad you'll know it because the car has a hard time running. They suspect it may have come of during the oil chnage.
This can mean a negative fuel trim or a positive fuel trim has been detected. This small sensor determines the flow of air coming in to the engine. The 2 O2 sensor basically has binary behavior it either reads about 0. Thats probably what's throwing up the P0171 system too lean code. If the Check Engine Light came back on with a P0170 code, then another problem exists.
If any of you have tried all this stuff, particularly just cleaning out the easily accessible portions of the intake, I recommend a SeaFoam treatment because worse case scenario is you don't get a cheap fix. So I changed the fuel filter, sparkplugs, wire. The driveability was way worse than now. Now it is summer it does not do that now I have new problem I just started getting this code P0170 and P0171. Seconds later, there is a sudden surge of power, which literally feels like a kick. If you've never done it before the best way to do it is as follows. If no symptoms are present while this code is stored, then the driver may be able to get by for a short period of time with this code saved.
If the oxygen sensors call for a fuel increase, the powertrain control module will act out a positive fuel trim. The reading will be different for different automobiles, so get a good spec. What repairs can fix the P0170 code? What is Intake or Vacuum leak? I cant afford to throw money at it and can do most of the work myself if I could get some idea of the problem. It is not my experience that it requires 2 consecutive driving cycles for the code to set. If any other codes are found, they may be causing this code to occur. Bring laptop to car, plug in cables, fiddle with software: nonzero effort. If you have any doubt as to repairs on your vehicle, please contact your technician.