I have two codes popping up from the engine light. P0720 and P1529. Is this a serious problem or is it just the speedometer? I think I just need a speed sensor replacement but I would like to make sure. I stopped driving it in fear of more damage. When I try to accelerate, it gave me a thud after slowing down and it doesn't make a sound when I stop at a stop light. It takes a long time to move and speed up.
My car has 206000 miles.
My car has an automatic transmission.
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