1996 Honda Civic Engine light still on after the repair

DUKEJAVIER

MEMBER
1996 HONDA CIVIC
4 CYL
FWD
AUTOMATIC
175,000 MILES

Had a problem with the transmission of my Honda Civic Ex Coupe '96. Returning from work, engine light turned on and transmission did not work. After few
minutes parked at my place, transmission worked. Very next day on my way to work, car ran good but with the light on. Transmission failed in front of my
place of work. Took the car to my regular shop. After some testing, they said a speed sensor and a solenoid need to be replaced so I authorized it. When car was done, 5 minutes on the expressway light came on again but I feel the transmission smoother than ever. Also noticed that it do not switch to third/fourth gear. What could this be? What needs to be done?

5 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi dukejavier,

Get a free scan done at Autozone to retrieve the trouble codes and let me know what they are.

It would provide an insight into the problem.

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Thursday, February 18th, 2010 AT 12:17 PM

DUKEJAVIER

MEMBER
2 POSTS

I followed your suggestion and went to my nearest Autozone. Got a free test (thanks for that) and the codes were 700 & 740. Can you give me some advice?

Thanks in advance.

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Saturday, February 27th, 2010 AT 12:32 PM

KHLOW2008

MECHANIC
41,815 POSTS

Here are the explanations for the problems.

DTC P0700 indicates there is one or more transaxle DTC, no fuel or emission DTCs were detected.

DTC P0740/40: LOCK-UP CONTROL SYSTEM

NOTE:
DO NOT perform this test procedure until all other DTCs have been repaired.

1. If any other DTCs are present, repair those DTCs first, then recheck for DTC P0740. If no other DTCs are present, go to next step.

2. Test line pressure. If line pressure is within specification, go to next step. If line pressure is not within specification, repair hydraulic system as necessary.

3. Replace lock-up control solenoid valve A/B assembly. Turn ignition off and clear DTCs. Road test vehicle at greater than 50 MPH for more than one minute. Check for DTCs. If DTC P0740 returns, replace transaxle and torque converter. If DTC P0740 does not return, system is okay.

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Saturday, February 27th, 2010 AT 7:26 PM

DUKEJAVIER

MEMBER
2 POSTS

OK, help me out a little bit more since I'm not a mechanic. If I'm understanding correctly, you're suggesting to repair first the P0700 code. How do I do that? Is it just a matter of buying a spare part? If so, which one? Is it an external part of the transmission?

You mentioned to replace the Lock-up Control Solenoid after fixing the first code. I have in front of me the invoice for the repair that was done at the beginning of the month. They replaced: Converter Lock-Up Solenoid & Mainshaft Speed Sensor. Those solenoids are the same?

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Sunday, February 28th, 2010 AT 11:57 AM

KHLOW2008

MECHANIC
41,815 POSTS

P0700 means other codes are present and does not indicate any particular fault.

The actual problem would be the P0740 and since the solenoids have been replaced, guess the trans is bad and has to be replaced as an assy.

The solenoids are the same as mentioned in the diagnostic procedures.