Question about 1998 Saturn SL

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Failed the emission test

I car is running fine, but I failed the emissions test today. The diagnostic codes read PO741 - Torque Converter Clutch Circuit Performance Supported or Stuck Off.

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  • fernandocela Nov 13, 2008

    I have a 2001 Deville Dts with the same problem. Runs fine but won't pass emissions/P0741

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  • 8 Answers

Check tcc fuse in the underhood fuse box

Posted on Jul 24, 2008

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Have a2005 deville with the code po741 cant pass ca. smog need to what dose it takes to fix this problem


Hi,

Code P0741 = Torque Converter Clutch Circuit Performance or Stuck Off. This relates to your transmission only and has nothing to do with Exhaust emmissions.

If failed smog test, there must be an issue within your emmission system, e.g. sensors etc

You will need to have your codes read again, or have your vehicle properly inspected.


Cheers,

Jun 14, 2011 | Cadillac DeVille Cars & Trucks

3 Answers

My Ford Focus 2006 4 cyc has an engine code PO741 on my OB2. What does that mean?


P0741 Torque convertor clutch circuit failure,it is located in the transmission valvle body, it is attatch to the valve body you can remove it seperately as long as your going to own the Ford focus you might as well get use to replacing these all the time,very common transmission issue with todays car. By the way it is sensitive to worn transmission fluid,when you dont service often these are suspectable to failure.

Apr 22, 2011 | Ford Focus Cars & Trucks

1 Answer

Car failed MOT on emissions yesterday but after a


Several things.....

EGR Valve
Bad Spark Plugs
Bad EVAP Canister.....

All related items to fuel and spark.

Do you have bad fuel mileage? How does the engine run? Smooth? Chugs? Idles rough?

Oct 01, 2009 | Daihatsu Charade Cars & Trucks

1 Answer

Failed Emision test


po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

Sep 01, 2009 | 2001 Dodge Caravan

1 Answer

Transmission light cod P0740


PO740 is a TCC/lockup code.TCC stands for Torque Convertor Clutch.In between the engine and transmission is a torque convertor.Inside the torque convertor is a clutch.This clutch engages to eliminate slippage inside the torque convertor.When a malfunction occurs in the system,which is activated by solenoids,and a computer,a TCC code will set.There is a diagnostic route specifically for that code,to determine if the malfunction is electrical,mechanical,or hydraulic.

Sep 05, 2008 | 2000 Dodge Caravan

1 Answer

My chevy s10 failed emissions


Have your cat. converter checked out. I just had one of these for the same reason in my shop today.

Jul 09, 2008 | 1991 Chevrolet S-10

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