2004 Taurus Obdii Problems. - Taurus Car Club of America : Ford Taurus Forum
 
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post #1 of 8 (permalink) Old 08-16-2008, 07:49 PM Thread Starter
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I have a 2004 Taurus SES with a 3.0L in it. I keep getting an engine light. It usually happens once evey two or three months and goes out after a few cold starts. Usually when this happens the car will have a very slight rough idle or slight shudder or stumble while driving at lower speeds. These issues are not constant and are very intermittent.

This time it came on it hasn't gone off in 5 days.

I have a generic code reader that will not connect to the OBDII port properly. When I say "can't connect", I mean that it can't communicate with the car. The same code reading unit will work properly with my 03 Taurus and my F150.

Any ideas where to look for why it won't connect? The local auto parts store's code reader would not connect either. All fuses seem to look good. Someone suggested looking at the ground wires under the hood. They look fine to me. All other aspects of the car work fine. Not sure how to check the OBDII port to see if it is working properly. Visually they look fine.

Will a dealer be able to find the problem? If so, what should I expect to pay for the diagnostic work?

Thanks, Jim
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post #2 of 8 (permalink) Old 08-17-2008, 08:15 AM
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Quote:
I have a 2004 Taurus SES with a 3.0L in it. I keep getting an engine light. It usually happens once evey two or three months and goes out after a few cold starts. Usually when this happens the car will have a very slight rough idle or slight shudder or stumble while driving at lower speeds. These issues are not constant and are very intermittent.

This time it came on it hasn't gone off in 5 days.

I have a generic code reader that will not connect to the OBDII port properly. When I say "can't connect", I mean that it can't communicate with the car. The same code reading unit will work properly with my 03 Taurus and my F150.

Any ideas where to look for why it won't connect? The local auto parts store's code reader would not connect either. All fuses seem to look good. Someone suggested looking at the ground wires under the hood. They look fine to me. All other aspects of the car work fine. Not sure how to check the OBDII port to see if it is working properly. Visually they look fine.

Will a dealer be able to find the problem? If so, what should I expect to pay for the diagnostic work?

Thanks, Jim
[/b]
FYI, when you are describing what engine you have, you can't just say "The 3.0 litre one" because both Vulcan and Duratec engines are 3.0L... I know it says Vulcan on your bio, but just FYI.... (I don't know the answer to your question, but just noticed you made that mistake atleast twice on different threads)...

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post #3 of 8 (permalink) Old 08-17-2008, 08:42 AM Thread Starter
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Ok, thanks for the tip. How do I know which engine type it is? There's nothing on the valve cover or cowling that states it either way.

Here are the codes that the code reader at Autozone was able to bring up today:

P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

P2195 (can't find definition anywhere online?)

Both mention HO2S-11. Is this the one on the in the front of the engine on the exhaust manifold or located somwhere else? Can these be tested in any way to see if they are really bad?

Thanks again, Jim
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post #4 of 8 (permalink) Old 08-17-2008, 09:21 AM
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You can get new NTK sensors on Ebay for <40 each. NTK makes the OEM sensors.

I would replace both of them. Make sure too that the EGR valve is not leaking exhaust gas when it should not be.

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post #5 of 8 (permalink) Old 08-17-2008, 10:56 AM
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Don't 2004+ have the newer CANBUS protocol?

--Nick
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post #6 of 8 (permalink) Old 08-17-2008, 12:18 PM
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Do a Google search for P2195 ford taurus you will find your answer.
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post #7 of 8 (permalink) Old 08-17-2008, 12:29 PM
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Quote:
Don't 2004+ have the newer CANBUS protocol?
[/b]
The 2004 and up does use a High Speed CAN network for powertrain communication.

I checked the wiring diagrams for '04 and '03. '04 has a High Speed CAN network, a Medium Speed CAN network, and an ISO network. '03 uses an SCP network and an ISO network.

That code reader probably wasn't fast enough to "talk" to any modules using the HS CAN or MS CAN protocol.

Currently driving a 2009 Focus SE Sedan w/5-Speed!

Previous cars:
1997 Geo Prizm
1996 Ford Taurus G

Formerly "Mr. X"
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post #8 of 8 (permalink) Old 08-17-2008, 01:00 PM
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get an Xcal!!

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