Code result

P24C4

EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 1

Moderate severity

What it means

The bypass valve position sensor learning has reached its software-side limit on bank 1 - typically heavy soot deposits have shifted the mechanical zero beyond the design adaptation range.

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

  • Heavy carbon build-up on valve seat

    high

    One of the most commonly reported causes for this code — check this first.

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