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How to test the obd codes

What is year--make--model? Generally 94 model year and older is obd1. 96 and newer is obd2, generally. 95 can be a cross-over year and could have a hybrid diagnostic connector.

Usually with obd2, you need an obd2 code reader. OBD1 you should be able to access some codes, yourself, w/o a code reader. Different makes can have different procedures for accessing codes/obd1.

Mar 05, 2015 | Cars & Trucks

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Obd2 code b0267

This is not an OBD2 fault code it is a body related code. Engine codes start with a Letter "P"

Aug 08, 2012 | GMC Envoy Cars & Trucks

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Replaced the O2 sensor unit and the ECM(programs installed) but I'm still getting CHECK ENGINE LIGHT(P0001). what is the possible problem and how can this be resolved?

P0001 Fuel Volume Regulator Control Circuit/Open The above code is about an oxygen sensor code for the heater circuit located in bank 1 sensor 1. (bank 1 is at exhaust manifold by the #1 cylinder head, bank 2 is on the 2nd cylinder head. On some engines, both exhaust manifolds could have one oxygen sensor each side and the 2nd cylinder head will have the sensor 2). On the oxygen sensor itself, it has 4 wires which are color coded. Two of wires are for the heater circuit that heats the oxygen sensor to make it reach optimum operation quickly. Those 2 oxygen sensor heater wires could be shorted between the sensor and the ecm (engine computer) or other engine components.
oxygen%20sensor%20heater%20copy.jpgThe common fix for this code is to check the integrity of the heater wires. Check the wires for insulation and routing which could be loose or touching a hot exhaust that can short the wires. If the engine has too many miles, it is possible that the heater circuit inside is worn and shorted which needs a replacement of the oxygen sensor. If you have a DVOM, you can also test the continuity of the heater wires from the oxygen sensor to your computer pins.
More detailed fixes will be provided as soon as you give the symptoms of the obd2 trouble code. ATS will provide the wiring diagram so you can trace the color coded wires. Use an obd2 code reader or scanner so you can access this obd2 trouble code. When you have this obd2 code list, use it as a reference and give the code to ATS. We will then send you all the possible fixes for the obd2 trouble code. ATS has lots of fixes for obd2 gm codes, obd2 ford codes, dodge obd2 codes and all obd2 import codes such as Toyota obd2 codes, Honda obd2 codes, Nissan obd2 codes, etc. All fixes for this obd2 codes are guaranteed or your money back.
Important TIPS about Oxygen sensor:
The oxygen sensor content of the exhaust gas indicates when the engine mixture is operating lean or rich. When the oxygen sensor detects that the engine is operating rich, the signal voltage is high, and any decreases in the signal voltage means the engine running is lean. The engine computer supplies a reference voltage like one volt or five volts, and then shows the change in the sensor return voltage as the sensor's resistance is changing. If you have connected everything properly, when you crank the engine, you should see the check engine light coming out.
Unheated oxygen sensors rely on the heat of the exhaust gases to reach the working temperature, therefore they might start to cool down while the engine is idling and revert back to a default air-fuel ratio setting. This type of sensor usually has a single wire connector, though others have two. Unlike the fuel pump relay, the 02 sensor heater circuits have a separate fuse for each sensor and grounds, which are controlled by the engine computer.
To read a voltage across the heater, one side must be connected to (+) and one side must be connected to (-), which is accomplished by the computer or a transistor. It can read 12V between each wire and a separate ground if it was connected to positive and the other was not yet connected to ground connection (for details, please contact ATS).after you replace oxygen sensor you have to drive for so many miles before it resets its sef

Dec 13, 2010 | 2001 Volkswagen Beetle

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How do I pull codes from a 2000 Toyota Camry 6 cylinder?

You must use an OBD2 reader, OBD2 vehicles do not support self-diagnosis. OBD2 vehicles are years 1996-present!! Bring your vehicle to your local autozone, they would read the codes for free!!

Sep 30, 2010 | Toyota Camry Cars & Trucks

1 Answer

If engine service light on then

All cars 1996 and new have OBD2 (on board diagagnostic) vehicle control systems.
With OBD2 there is about a thousand different possible generic codes, and way more than that manufacture specific codes.
It could be as simple as removing the gas cap while it was running. The computer reads it as a vapor leak, and turns the light on.
The best way find out what is turning the Check engine light on, is to scan it with a code reader or scanner2_bing.gif.
A lot of the big auto part stores have the capability to scan your computer2_bing.gif for free and give you the codes.
Then you can go from there.
Check out this sight for some very good OBD2 info.

Nov 25, 2009 | 2005 Nissan Altima

2 Answers

What could be a cause of Check Engine on a car is Hyundai Santa Fe

over 200 reasons, only way to know is get the code so it can be diagnosed

Nov 24, 2009 | 2006 Hyundai Santa Fe

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06 vw beetle won't start...possibly fuel pump is locking. anyone know how to unlock the pump? or have any other ideas why it doesn't start? thanks

OBD2 codes could stop starting. Buy a OBD2 reader from an auto parts store, ($70). Read the codes and write them down. Clear the codes. See if will start. If you need to find the OBD2 port look in the repair manual CD. ($16 Ebay). On a 2003 TDI it is under the steering wheel, just to the left a bit. If you have codes, you can look them up on the repair manual CD.

Nov 12, 2009 | 2006 Volkswagen New Beetle

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Need to run fail codes for f150 2000 and how to short the computer to run test

Buy a cheap OBD2 tester (about $35) and plug it in to your vehicle to show trouble codes and sensor values.
Codes can then be cleared from computer to turn off check engine light.
The OBD2 plug has to be with in 3 feet of steering column on all OBD2 equipped vehicles.

Sep 01, 2009 | 2000 Ford F150 Flareside SuperCab

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