Code result

P0608

Control Module VSS Output A Malfunction

Moderate severity

What it means

The vehicle speed signal output from the control module to other systems is faulty. Other modules expect a speed signal that the ECM no longer provides correctly.

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

  • ECM output stage fault

    high

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

  • Signal path to consumers faulty

    medium

    A plausible cause — test and verify before replacing parts.

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