Code result

P269B

Exhaust Aftertreatment Glow Plug Control Circuit / Open

Moderate severity

What it means

The control line for the aftertreatment glow plug (used on some diesels to ignite injected HC during DPF regeneration) is open. Active regeneration cannot start.

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

  • Open coil in glow plug control relay

    high

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

  • Broken control wire

    medium

    A plausible cause — test and verify before replacing parts.

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