merc benz c220 cdi 2008 model right hand drive vehicle i drive the car for 3 hours reached my destination after the car is in standby for 4 hours when i take out my vehicle it drives fine but check engine light is blinking from 2 days it drives good nothing happened sometimes it blinks light and sometimes not from 2 days it is blinking what can be the issue.

 

Sometimes, a not tight enough gas cap can trigger a check engine light.

 

thanks for reply i checked the diesel cap which is tight enough but light is still blinking and i have 1 more issue after restarting of the car after 2 days i drive for 7 hours and after restart the car it shows pre safe inoperative and airbag light turns on and these faults come after when i restart the car 1st it shows check engine after 2 days it shows pre safe inoperative what should i do please help me what can be the issue.

 

please read the code first. cannot help without code.

 

Check if aircleaner is tight down on engine, cheap no cost, it happened to me(I had two callouts-800Km drive for them(Code reset) to my home for this, car runned fine also, only the 2nd tech find the fault-2 weeks)-(Remeber codes said MAF sensor faulty).