Code result

P23B6

NOx Sensor Supply Voltage Circuit Bank 1 Sensor 3

Moderate severity

What it means

The supply voltage to the bank 1 sensor 3 NOx sensor is outside the calibrated window.

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

  • Supply voltage low

    high

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

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