Why does my Tiggo 4’s “Check Engine” light turn on and show error codes related to ignition?

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Why does my Tiggo 4’s “Check Engine” light turn on and show error codes related to ignition?

A faulty ignition coil often triggers the “Check Engine” light. The engine control unit may detect misfires, poor combustion, o r irregular spark timing. Ignoring these warning signs can cause reduced fuel efficiency, increased emissions, and long-term engine damage. Proper diagnosis of coil performance and spark plug condition is essential.

Talha Kyanii asked on 06 Dec 2025 12:30:17 pm

1 Answer

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Gari Master - on 06 Dec 2025 12:31:33 pm

A faulty ignition coil can trigger the “Check Engine” light. The engine control unit detects misfires, irregular spark timing, o r poor combustion. Ignoring the warning can lead to decreased fuel efficiency, higher emissions, and potential long-term engine damage. Diagnosing and replacing faulty coils is essential for safe and efficient operation.