Code result

C0821

Air Suspension Height Sensor Front Right

Moderate severity

What it means

The front right ride height sensor reports an implausible or missing signal.

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 linkage broken

    high

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

  • Sensor failed

    medium

    A plausible cause — test and verify before replacing parts.

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