Code result
P241F
EGR Cooler B Efficiency Below Threshold
Moderate severity
What it means
The temperature drop across EGR cooler B is below the calibrated threshold - cooler is fouled with soot, has internal scaling, or coolant flow is restricted. Recirculated gas reaches the intake hotter than designed, increasing NOx and combustion temperatures.
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
Cooler fouled with soot or scaled
highOne of the most commonly reported causes for this code — check this first.
Related help
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