Code result
P0403
Exhaust Gas Recirculation Circuit Malfunction
Moderate severity
What it means
The control circuit for the EGR valve solenoid is open or shorted. The ECM cannot drive the valve to the commanded position.
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 solenoid winding defective
highOne of the most commonly reported causes for this code — check this first.
Wiring or connector fault
mediumA plausible cause — test and verify before replacing parts.
ECM driver stage damaged
lowLess common, but worth ruling out after the more likely causes.
Related help
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