What happened to the emission index of Peugeot 207 engine? How to solve it?

I helped you solve your problem and found that there are quite a few problems like yours. I think it will be a common problem of this car! For your reference, according to 4S, the main reason is that domestic oil products are unqualified and can't meet Euro III or Euro IV standards. After OBD detects the oil problem, ECU will automatically lower the emission standard, which will light up the emission warning light. If the situation is serious for a long time, it will also lead to the appearance of other fault lights. This problem is not only in Peugeot cars, but also in the triumph of Citroen. At present, the rumored solution is that the new car can upgrade ECU, thus changing the shift speed and reducing the accumulation speed of oil pollution. If you haven't paid attention to this problem for tens of thousands of kilometers, it is estimated that you can only clean the engine (? )

In addition, the more effective daily maintenance scheme given by 4S shop is

Clean the throttle regularly. At present, the cost of cleaning 4S stores in Beijing is about 100 yuan, but some netizens said that the cost of starting their own business is only 2-4 yuan. If you have the courage, you can Google it. There are illustrations.