Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 2 replies - 1 through 2 (of 2 total) Author Replies December 12, 2016 at 11:44 pm in reply to: Can I still drive my car with bad knock sensor? #873371 MaratParticipant So if I understood you correctly you suggest that EGR valve is blocked which leaves no space for air and gas inflow to the engine and this causes detonation to the engine so I will need get the valve cleaned or replaced? December 11, 2016 at 8:36 pm in reply to: Can I still drive my car with bad knock sensor? #873332 MaratParticipant Hi Mazda 3 can you share please the solution for your CEL and Knock Sensor error? I have the same problem on the same model… so what helped you? Many thanks Author Replies Viewing 2 replies - 1 through 2 (of 2 total)