What is the fault of Toyota rrv4 anti-skid light, steering wheel and 4wd light?

1, there is too much carbon deposit in the throttle or engine, and the mixture ratio is out of balance due to the failure of the oxygen sensor, which is prone to the phenomenon that the engine failure light is on.

2. If the car drives at a low speed in the urban area for a long time, it is easy to appear this phenomenon.

3. The nozzle leaks oil, which causes the nozzle to be still in the oil supply state after the throttle valve is closed, which leads to the excessive mixture when driving at low speed, which leads to the unstable idle speed after the oil is closed, and even leads to flameout in severe cases.