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← TechnologyWhich risk increases when an internal combustion engine's exhaust temperature sensor fails low?
A)Fuel control enters 'open loop'✓
B)Catalytic converter core meltdown
C)Turbocharger over-speed and bearing failure
D)Intake manifold absolute pressure faults
💡 Explanation
Low exhaust temp. signal from a defective sensor invokes open loop fueling because normal exhaust temperature feedbacks for stoichiometric adjustment are considered corrupted; therefore, excessively rich unburnt fuel exits and may damage components, rather than optimal combustion control for higher efficiency and lower emissions.
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