What if Haval H9 exhaust controller is abnormal?

Four methods to eliminate abnormal lighting of exhaust controller.

1, there is serious carbon deposit inside the throttle or engine, and the engine computer will detect the signal and the fault light will be on. Clean the throttle or engine interior. If it's serious, you need to change the throttle.

2. The fuel used by the vehicle is of poor quality or deteriorated after being parked for a long time, so it needs to be replaced.

3. One of the oxygen sensors before and after the three-way catalytic converter is damaged, or the sulfur, phosphorus and other substances produced by the three-way catalytic converter are poisoned. You need to go to a 4s shop or a repair shop to find a professional to detect and repair.

4. If the exhaust fault light is on, the vehicle can't start when the engine is turned off, mostly because the fuel pump or ignition device is out of order, and it is necessary to replace the new fuel pump or accessories of ignition device such as spark plug and ignition coil.