A flickering check engine light with a rough idle in a BYD Qin Plus often points to ignition misfires or vacuum leaks. Here’s how to diagnose it safely and know when to stop driving.
When your BYD Qin Plus starts idling rough and the check engine light flickers rather than staying steady, your engine is telling you it's struggling during combustion. A flashing light specifically signals a misfire that's severe enough to send unburned fuel into the exhaust system. That's not just an annoyance — it can damage your catalytic converter if left alone.
