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Check engine light on - Printable Version

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Check engine light on - armcorsino - 04-16-2013 05:48 AM

I have a 2001 honda odyessy, i recent have a check engine light on & it is first time it light up. I diagnostic it & it read a code p0740 - torque converter clutch circuit malfunction. What does this mean & were is it located, what function does it do. Is it safe to drive, when check engine light it on?Sad

RE: Check engine light on - Rupe - 04-17-2013 12:23 AM

It means the "lock up" on the TC is not working so while not a problem to drive around locally this would cause you to fail a smog test in many states.

What you should do is look deeper with a full function scanner to see if there's anything else questionable. IOW, temp sensors and other engine signals like throttle position can cause this, along with just a plain old tired transmission.... or even one that may be low on trany oil.... or possibly one with VERY high mileage. Might even be simple like a pulled wire in the trans harness... or old collision damage?

Give us a bit more info and maybe we can help more. It might also help if you post this in the HONDA section.