Q: SPEEDOMETER

asked by on January 09, 2017

my speedometer is not on 0mph when stationary the needle has dropped below it and when driven and im doing 30mph the needle is on 20mph i've taken the battery out for half an hour and reconnected it to reset the ecu but its hasn't worked any idea what it is ?

My car has 100000 miles.
My car has a manual transmission.

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