How to Solve the Engine Warning Light Issue on Baojun 730?
4 Answers
If the engine warning light is on in your Baojun 730, follow these steps: First, check if the engine is running normally and whether there are issues like shaking or black smoke. If so, avoid restarting the engine. Note: Never restart the engine if the light is red. If the engine can start, turn it off for 5-10 minutes. Without pressing the brake, press the start button once or turn the key halfway to the 'on' position without depressing the clutch. The car will perform a self-check after powering on. Wait 5-10 seconds to see if the warning light turns off. If the light remains on, visit a service center as soon as possible. Technicians can use a portable diagnostic tool to read the fault code, identify the issue, and perform targeted repairs. The engine warning light resembles a water drop icon and comes in two colors: yellow and red. Yellow indicates a warning, while red means prohibition. A yellow light suggests some system parameters may be out of range; the car can still be driven, but some functions may be limited. A red light requires immediate engine shutdown and inspection before further driving. Common causes for the engine warning light include: sensor failure, fuel quality issues, poor combustion mixture, turbocharger problems, intake/exhaust issues, or anti-theft system malfunctions.
My own Baojun 730 also had the engine warning light come on once. It happened after refueling, and the mechanic said it might be due to substandard gasoline causing sensor false alarms from impurities. Later, I added a bottle of fuel system cleaner and drove a few dozen kilometers to clean the fuel lines, and the warning light went off by itself. I recommend choosing reputable gas stations for refueling and not going for the cheapest option. Also, regularly changing the air filter and cleaning throttle body carbon deposits can help prevent this. If the light stays on, get to a professional repair shop to read the trouble codes immediately—don’t keep driving and risk damaging the catalytic converter. Pay attention to your RPMs in daily driving; prolonged high revs in low gear is especially harmful to the engine.
Last time I repaired my friend's Baojun 730, the engine malfunction light was on and it turned out to be a faulty oxygen sensor. The sensors in this type of vehicle are particularly delicate and prone to damage from bumps or water exposure. During diagnosis at the repair shop, they first used an OBD scanner to read the fault codes and confirm the location. When removing or installing, be careful not to twist and break the wiring harness. Additionally, excessive spark plug electrode gap or aging ignition coils can also trigger the warning light. You can open the engine hood yourself to check for loose wire connections. It's best to keep a simple OBD scanner handy - just plug it in for around a hundred yuan to check the cause. If accompanied by shaking or black smoke, stop the vehicle immediately to avoid cylinder scoring.
The engine light on my 730 suddenly came on, so I quickly pulled over and turned off the engine to check. I found the engine oil was a bit low, and insufficient oil pressure can also trigger a fault. After topping up the oil, I restarted the car, but if the light remains on, it's best to take it to the 4S shop for handling. Don’t randomly dismantle such electronic control issues, especially in turbocharged models, as they involve the turbocharger’s circuitry. When parking, pay attention to engine compartment heat dissipation and prevent oxidation of battery terminals. Older models require extra attention to wiring harness aging—I once had a light warning in rainy weather due to cracked wire insulation. It’s recommended to inspect engine compartment connectors every six months and apply conductive grease to prevent oxidation. For vehicles with modified circuits, it’s even more important to check for grounding issues.
