Code result

P013D

O2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 2

Moderate severity

What it means

Post-cat O2 sensor on bank 2 responds too slowly when mixture transitions from lean to rich. A drifted or sluggish lambda sensor lets the mixture run lean or rich without correction — fuel economy and emissions suffer immediately.

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

  • Sensor aged

    high

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

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