There are many people asking about the problem of the Yellow engine light, but there are too many things involved, such as fuel, air intake, ignition, exhaust and the coordination of their systems, DME control, etc. So I really can't give you the answer you want. Here, I can only analyze it briefly. I hope it can help you a little.
Analysis of causes and failure points
Fuel system: fuel pump, fuel pressure sensor, fuel injection nozzle, carbon canister solenoid valve.
Fault code: it is likely to report mixed gas and fuel pressure related fault codes.
Intake system: throttle, air flow sensor, intake manifold pressure sensor, VANOS motor, eccentric shaft sensor, secondary air pump.
Fault code: it is likely to report mixed gas, electronic valve and air related fault codes
Ignition system: ignition coil, spark plug.
Fault code: it is likely to report ignition related fault code.
Emission system: exhaust valve, turbine pressure relief valve, oxygen sensor, three-way catalytic converter.
Fault code: it is likely to report relevant fault codes of air, mixture, boost pressure, oxygen sensor and exhaust catalyst converter.
Control system: DME, related lines.
Trouble code: it's not sure what you're reporting. There are various ways. Many of them are indirect, so you have to eliminate others first.
The above can be said to be common fault points that cause the yellow light of the engine. When we meet them, we must analyze them with the diagnostic fault code. If the owner can provide an accurate description of the fault phenomenon, it should be easy to find the real fault point. If the fault point can be determined, but the fault remains after replacing the corresponding parts, then the DME problem should be suspected.
But as car owners, we should be most concerned about the Yellow engine light is on can we continue to run?
The answer is yes, but we need to slow down. Here's a suggestion: if the engine yellow light suddenly appears during high-speed running, it's recommended to drive to the nearest service station for inspection at a speed of no more than 80km / h; if it's on the urban road, it's recommended to drive to the repair shop at 80% of the speed when the engine yellow light is on. During this period, we should pay more attention to whether there will be other fault lights, especially the red fault light, so we should pull over safely and wait for rescue.