Code result

P23A8

Exhaust Heat Exchanger Bypass Valve B Position Sensor Stop Performance

Moderate severity

What it means

During calibration the position sensor of bypass valve B does not reach one of its mechanical end stops as expected.

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

  • Linkage worn or slipping

    high

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

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