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7 reasons your check engine light comes back on after being reset

A check engine light that returns after being reset means the underlying fault has not been repaired, only cleared from the ...
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P0118 engine code explained: Causes, symptoms, and fixes for coolant temperature sensor issues

The P0118 code means that the engine control module (ECM) has detected a voltage signal that’s too high from the engine coolant temperature (ECT) sensor (below). In practical terms, the ECM believes ...