Code result
P23E8
EGR C Flow Excessive Detected
Moderate severity
What it means
Same as P049C on EGR loop C. EGR mixes inert exhaust into intake to lower combustion peak temperature — too little raises NOx, too much causes misfires and rough running.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
EGR valve C sticking open
highOne of the most commonly reported causes for this code — check this first.
Related help
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