engine light is flashing

Question

P0128 Chevrolet -  hi i have chevrolet optra 2004 recently my engine light is flashing and same time hold light is flashing simultaneously...does this means failure on engine coolant temperature sensor???

Answer 1

Hi there,

Normally if the check engine light is flashing there is a misfire causing it. This could be a bad ignition coil, faulty spark plug or plug wire.