Technical Check Engine Warning Light

[akurekin]

Dear Fiat owners and experts, I need your help on the following subject. I own Fiat Grande Punto 1.4 8V, 88k miles, 2009. Recently a yellow warning light came up on a panel and a "check engine" message. I have checked the error codes: 0172 and 0300. I replaced the spark plugs, and )2 sensors (one of them was faulty), but the warning light is still ON.

Any suggestions how to resolve this puzzle?

Thanks.

 

[bugsymike]

Dear Fiat owners and experts, I need your help on the following subject. I own Fiat Grande Punto 1.4 8V, 88k miles, 2009. Recently a yellow warning light came up on a panel and a "check engine" message. I have checked the error codes: 0172 and 0300. I replaced the spark plugs, and )2 sensors (one of them was faulty), but the warning light is still ON.

Any suggestions how to resolve this puzzle?

Thanks.

Has the work you have done cured the misfire?
Have you got a good code reader to delete the error codes and then see if they return?