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 ...
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Every engine sensor explained: why they matter
Air fuel ratios, emissions, and others: oxygen (O2) sensor, exhaust gas temperature sensor (EGT), nitrogen oxide sensor (NOx), knock sensor The video illustrates how each sensor communicates with the ...
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