maryk2121 Posted December 22, 2009 Share Posted December 22, 2009 I have a 2003 Honda Accord V6 with 134,200 miles. TCS light came on & car would not shift gears. Brought it to Honda dealership & diagnosed with multiple trouble codes P0700 & P0721. Traced problem to failed countershaft speed sensor. Replaced countershaft speed sensor for transmission & cleared trouble codes. Drove the car for a total of 50 miles & car would not shift gears. Engine light came on. I was told that I need a new PCM. Since I now need a new PCM, do you think I also needed a new countershaft sensor? I appreciate your assistance with this. Link to comment Share on other sites More sharing options...
James Matteu Posted December 23, 2009 Share Posted December 23, 2009 You say after 50 miles of driving, the engine light came on; what is the code that came up? Link to comment Share on other sites More sharing options...
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