2003 Honda Odyssey Logo
Posted on May 17, 2010
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How I fix when egine light n tcs light on when code is 740 how I fix that

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  • Expert 76 Answers
  • Posted on May 18, 2010
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If you over 100,000 miles handa says replace the trans if your under you may be under warranty.


DTC P0740: Problem in Lock-up Control System

As per Honda Service Bulletin 02-062 (January 5, 2007), DTC P0740 testing procedures have been replaced by the following:

Got an A/T DTC 0740? Don't Replace the Solenoids
If you're troubleshooting a '99-04 Odyssey for an A/T DTC P0740 (lock-up control system), don't replace the TCC, shift, or linear A/B solenoids if the A/T has more than 10,000 miles racked up. What's most likely causing this DTC is low line pressure resulting from the inlet screen being clogged with clutch material. To fix this problem, see additional information below, and replace the A/T.

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Your kidding. How about you get a code reader figure out what the code is then fix the problem and the light will go out if you fixed the correct part
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The main reason the TCS light is on is because there is a problem with the main brake system. The traction control system uses the hydraulic brakes to help keep the car on the road in a skid or other event.
If the main brake system is faulty, the TCS can't do its job.
The hydraulic brake system may be working fine in your case, but the TCS does not know that.
I wonder if that low fluid switch can be bought separately ??
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1990 volvo 740gl far left corner of dashboard has a yellow light thats on constantly. a diagram of a car with a zigzag road. whats that mean.

Either you have a problem with the TCS (Traction Control System), or the TCS is switched off. Most cars with TCS have a button on the shift or the dash labeled "TCS" or "TCS OFF". Find the button, and press it with the car running in gear. If the light goes out, problem solved.
If you cannot manually disengage TCS (no button), or when you press the TCS button the light flashes, check all your brakes and make sure none are dragging or worn out. Also make sure all your tires are properly inflated and balanced, and none are worn out.
TCS works by controlling your brakes on slippery roads and will dynamically apply the brakes to each wheel in order to prevent a skid, even when your foot is not on the brake pedal. During normal driving, the TCS light is out and will either come on briefly or flash when it is active and preventing your car from going into a skid. When the light is on constantly, the system is disabled- either because it was shut off by the driver pressing the TCS (or TCS OFF) button, or because the system has detected a brake problem and automatically disabled it for safety reasons. Worn or dragging brakes, a tire that is flat or worn, or even a wheel that is badly out of balance will cause the system to disable itself, and a severe wheel alignment problem will also.
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Tcs light came on with my 2000 honda odyssey,what does that mean?

TCS = Traction Control System

The TCS light is on because the check engine light is on this is common repair the check engine light failure abd the tcs will go back to normal.

You need to check the code to see if it is a trans code and then if it falls under the bulletin limits Honda will replace the trans under warranty. Even if you are out of warranty Honda will sometimes do a partial warranty. Here's a copy of the Bulletin.

There are several things that will turn the check engine light and tcs light on .if you get the code I can tell you exactly what the problem is . on your year i see transmission problems as well as egr problems. if you go to any large auto parts store they will check the code for free or a very small fee.

Hope helps (remember to rate this answer).


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