What causes the engine fault code in Haval H6?
2 Answers
Haval H6 engine fault code causes are as follows: Poor fuel quality, not meeting standards: Most car owners have likely experienced this—shortly after refueling, the engine warning light appears on the dashboard. This is usually due to filling up with low-quality fuel at non-standard gas stations, leading to incomplete combustion of the air-fuel mixture and triggering the engine warning light. While this does not affect driving safety, it can cause some degree of harm to the engine. Oxygen sensor failure: There are two oxygen sensors installed in the car, one before and one after the three-way catalytic converter. The front oxygen sensor detects the air-fuel ratio under different engine conditions, while the ECU uses this signal to adjust fuel injection and calculate ignition timing.
I've been driving my Haval H6 for five years now, and it's been quite reliable, but the engine trouble light keeps popping up occasionally, which is really annoying. Last time it happened, the OBD scan showed an oxygen sensor error, pinpointing the issue to the exhaust system—likely due to dirty fuel or aging ignition coils, which also caused increased fuel consumption. Additionally, it could indicate dirty spark plugs or misfires, and ignoring it could degrade engine performance. I recommend getting a diagnostic tool first to read the specific codes—it's cost-effective and hassle-free—then proceed with repairs based on the results. Don't delay; small issues can escalate. Regular oil changes and air filter replacements can prevent these problems. I stick to a strict maintenance routine myself, and the car runs smoothly as a result.
