What Causes the Engine Malfunction Light to Illuminate When the Air Conditioner is On?

1 Answers
MacDallas
07/29/25 2:09am
Opening the air conditioner increases the workload on the engine. If this exceeds the engine's capacity, it can cause abnormal engine operation. When the engine malfunction light comes on, the vehicle should not be driven. Inspection and Cleaning: Frequent use of the air conditioner can lead to severe carbon buildup in the car. It is necessary to inspect the vehicle's oxygen sensor and check for excessive carbon deposits in the engine, including areas such as the throttle body, fuel injectors, spark plugs, and intake manifold, and clean them promptly.
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