Mazda Miata MX-5 Problem Report

Mazda Miata MX-5 Check Engine Light Due to Restricted EGR System

(7 reports)

The passages for the Exhaust Gas Recirculation (EGR) system can become restricted or clogged causing the Check Engine Light to illuminate. The EGR valve will need to be inspected and the passages cleaned.

EGR valve failed & clogged. EGR replaced but problem quickly resurfaced. Turned out that the passageway in the valve cover was clogged, too, and had to be reamed out. That fixed the problem entirely. Runs great now. -
Engine light comes on when checked I get code 420 which has something to do with the o2 sensor and the catalac converter, both have been changed and the light still comes on. -
EGR is causing the check engine light to come on. This looks like a recall to me wwrpsr@yahoo.com I see that I am not the only one with this problem -
The check engine light came on and the code read for the EGR system. I replaced egr valve and the light didn't turn off. I had to clean out the throttle body in order to get the light to turn off. -
Related Items:
The car will be running fine and then the CEL comes on. It is never consisent. We have had it...
Some models may have a problem where the Check Engine light illuminates indicating an improperl...
I get it cleared and after about 25 miles it comes back on. Have replaced all new wires, plugs,...
My check engine light just went on today. My car has 55000 miles and looks and runs great! An...