Friends Honda civic is throwing code P0740

RyanAutry · 02-03-2005, 08:33 AM

Its a 98 civic ex coupe. It has a Automatic Transmission in it.

Its a p0740
Torque Converter Clutch Circuit Malfunction

I have been Told to check the solinoids. Those were replaced. Still throws code. Swaped the transmission, It still throws the code. Do you have any other idea's? Everything seems to drive fine with the exception of the code. Is there any often occuring problems with these transmissions like this?

Ryan Autry

scdarksol · 02-04-2005, 05:05 PM

try the ecu yet?

ldyjam · 06-21-2011, 09:05 AM

Whats an ECU? My understanding is that this happens only when traveling 45-55 mph and often there are no changes felt in driving. Still waiitng to hear back from mechanic how much its going to cost for my daughters to be fixed.

grumblemarc · 06-21-2011, 09:24 AM

Quote:

Originally Posted by ldyjam

Whats an ECU? My understanding is that this happens only when traveling 45-55 mph and often there are no changes felt in driving. Still waiitng to hear back from mechanic how much its going to cost for my daughters to be fixed.

Maybe you didn't see but this post is years old.
You might want to wait to hear back from your mechanic.

jeproks · 09-20-2011, 07:53 AM

Quote:

Originally Posted by RyanAutry

Its a 98 civic ex coupe. It has a Automatic Transmission in it.

Its a p0740
Torque Converter Clutch Circuit Malfunction

I have been Told to check the solinoids. Those were replaced. Still throws code. Swaped the transmission, It still throws the code. Do you have any other idea's? Everything seems to drive fine with the exception of the code. Is there any often occuring problems with these transmissions like this?

Ryan Autry

Did you figure out what the problem was? Mine was throwing the same code and I replaced the transmission and still throwing the code. Replaced the ECU with my spare and same error.

RonJ@HT · 09-20-2011, 08:11 AM

02-03-2005, 08:33 AM	#1
RyanAutry Honda-Tech Member Garage is empty, add now Join Date: May 2002 Location: California Posts: 3,037 iTrader Rating: (0)	Friends Honda civic is throwing code P0740 Its a 98 civic ex coupe. It has a Automatic Transmission in it. Its a p0740 Torque Converter Clutch Circuit Malfunction I have been Told to check the solinoids. Those were replaced. Still throws code. Swaped the transmission, It still throws the code. Do you have any other idea's? Everything seems to drive fine with the exception of the code. Is there any often occuring problems with these transmissions like this? Ryan Autry

02-04-2005, 05:05 PM	#2
scdarksol Garage is empty, add now Join Date: Nov 2002 Location: Philadelphia, Pa, USA Posts: 409 iTrader Rating: (0)	Re: Friends Honda civic is throwing code P0740 (RyanAutry) try the ecu yet? __________________ 93 del sol d16z6 supercharged SOLD 89 Civic hatcback, looks fast and furious, but slow like a turtle (broken into by CROOKS!) 91 Civic LX 4 door The ultimate Beater! SOLD 91 CRX SI 4 sale $2900 near mint condition! SOLD 95 Civic CX with B16a 05 C230 kompressor

06-21-2011, 09:05 AM	#3
ldyjam Trial User Garage is empty, add now Join Date: Jun 2011 Posts: 3 iTrader Rating: (0)	Re: Friends Honda civic is throwing code P0740 Whats an ECU? My understanding is that this happens only when traveling 45-55 mph and often there are no changes felt in driving. Still waiitng to hear back from mechanic how much its going to cost for my daughters to be fixed.

09-20-2011, 08:11 AM	#6
RonJ@HT Moderator 2000 Honda Civic My Garage Join Date: Feb 2008 Location: Houston, Texas Posts: 28,980 iTrader Rating: (0)	Re: Friends Honda civic is throwing code P0740 __________________ Don't guess, troubleshoot --------------------------------------------------------- Useful tech links: FAQs; Codes; Check Spark; Test Fuses; Fuse 15 TSB; Clean IACV or FITV --------------------------------------------------------- *Please don't PM me tech questions. C*reate a thread.

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Friends Honda civic is throwing code P0740