Main dealer has diagnosed the transmission control module to be the reason I get these breakdowns with car stuck in neutral and 'check system' warning light. An independent garages I know and trust did have a look at the error codes and said it was something only the main dealer could do.
This replacement is as much as the car is worth, however it is in otherwise good condition and I'm happy with it (though it is over 100k miles now). My fear is having this replaced and the problem isn't fixed, and Honda then just want to replace some other component.
What is the TCM anyway? Is it a mechanical component subject to wear? If it's just an electronic component then how actually does it fail?
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