Code result
P23E7
EGR C Flow Insufficient Detected
Moderate severity
What it means
Same as P049B 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 cooler C clogged with soot
highOne of the most commonly reported causes for this code — check this first.
Related help
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