Can some one toell me what it means obd 11

It is an OBD2 communication protocol.

ISO 9141: AUSV 1320 OPEN Automotive Electronics

https://weber.instructure.com > ... > Pages
This protocol has been used since 1996. With the ISO 9141 protocol, each bit of information is 96 us long and has two voltage levels to represent a logic 0 or 1 ...
Missing: S80 ‎T6 ‎2.8.

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OBD-II / CAN / ISO9141 technical issues ' SwedeSpeed

https://www.swedespeed.com > threads > obd-ii-can-iso...
Jun 24, 2006 - Let's talk about the details of OBD-II and other Volvo data access... As we know, all Volvos from 1996 in the US support some form of OBD-II ...

https://play.google.com/store/apps/details?id=com.motordata.obd try out this (it's free), this app have got explanations for P0 ? P2 codes. Besides, I recommend to use it on an ongoing basis.

You probably mean a P0174 not a P174. P0174 is a lean code. Usually on these models it is a vacuum leak. Either intake gasket, vacuum hose, intake runner diaphragm etc. Slight chance it is a MAF sensor or low fuel pressure. If you have no symptoms of hesitation on acceleration or bogging then probably one of the former is the cause. At a repair shop they would check the freeze frame data and see what was going on when the code appeared. If the problem was happening at idle then they would spray flammable arousal! around and look at the short term trims and see if they go up. One could also narrow the problem with a smoke machine. Does it idle rough? Worse hot or cold? Hope this helps some.

what does it mean p1000 code

Copy and paste the following links one-by-one into your browser:

www.obd-codes.com/p0174
www.obd-codes.com/0401

it means an unit either the ecu or gearbox module was not complete and will need retesting, this can be because of an repair or damage when repairing. so the unit/s needs testing.

2001 Buick LeSabre 3.8L V6 Check Engine Light come on after driving in 20 minutes,error code P0171.....O2 sensors and fuel filter changed ,how can I pinpoint the source.

P174 means Oxygen sensor was slow in switching Single, Right or Rear HO2S - Fuel control

P171 means Oxygen sensor not switching - system was at adaptive limits - Single, Right or Rear HO2S - Fuel control

Visit http://www.troublecodes.net/Ford/
for a comprehensive code listing for your car.

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P0171 - System Too Lean (Bank 1)
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.

A code P0171 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 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 solutions include:

• In the vast majority of cases, simply cleaning the MAF sensor does the trick. 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 all vacuum and PCV hoses, replace if necessary
• Check for a dirty fuel filter and proper fuel pressure

P0174 is identical to P0171, except it indicates the problem exists on Bank 2 as well.

Normally you can disconnect the battery for a few minutes and this does the trick. If the light comes back on, you may need to read the codes again. And, if it faults the MAF...you know it is not that and may be something else.