Honda Accord 2000 4 cylinder ex pulling codes p700,p740,705,706

Question

My car about a month ago started acting up out of no where. I was driving on freeway and all of a sudden lost acceleration and would just rev. I shifted from d4 into d3 and was able to drive to get home but d4 light was still flashing while in d3. Check engine light codes pulled the p700,p740,705, and one time p706. We first thought it was the control Solenoid but that didn't fix the problem. The car is fine driving for the first 20 min or if you don't go over 50 mph the moment you do that the check engine will pop back up and car starts acting up. I have got it down to it either being the speed sensor or the range switch(neutral control switch). Which one do you think I should try to fix first? Or both? Any suggestions are very helpful.

Answer 1

Hi there,

P0700 is letting you know other codes are stored.

P0740 torque converter clutch solenoid valve. Here is some info for you.

P0740 HONDA - Transmission Lock-Up Control System Fault

Read more: https://www.autocodes.com/p0740_honda.html

P0705 and P0706 indicate an issue with the park/neutral position switch. 

P0705 HONDA - Short In Transmission Range Switch Circuit

Read more: https://www.autocodes.com/p0705_honda.html