Haval's engine fault light is on, and the idle speed is shaking. How to solve it?

Hello, Haval car engine fault light is on, idling jitter, and car engine idling jitter fault light is on.

1, air intake system failure, dirty throttle, resulting in low idle speed. More common faults, clean the throttle in time. Idle motor or throttle position sensor is faulty. Replace throttle position sensor or idle motor. Motor idling is mainly due to excessive carbon deposition, which can be cleaned, but it can only be replaced if the carbon deposition is serious;

2. The feedback information of the air flowmeter is wrong. Feedback the sensor of engine intake and check the air flow meter. Exhaust gas recirculation EGR valve failure. Adjust or replace EGR valve. Air inlet pipe or air inlet pipe leaks. Replace related parts. Engine valve timing error. Valve timing mainly controls the opening time of intake valve and exhaust valve, and adjusts the valve timing of the engine;

3, exhaust system failure oxygen sensor failure. The oxygen sensor feeds back the air-fuel ratio signal to the engine. Failure may lead to inaccurate fuel injection and engine jitter. The three-way catalyst is blocked. Three-way catalytic converter is a device for purifying waste gas. The blockage of three-way catalytic converter will not only make the engine shake, but also lead to the obvious decrease of engine power.

I hope I can help you!