Code result

P0781

1-2 Shift Malfunction

High severity

What it means

The TCM detects a fault during the 1-to-2 upshift. The actual gear ratio after the shift command does not match the expected ratio for second gear.

Is it safe to drive?

No — stop driving

This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.

Most likely causes

  • Shift solenoid A faulty

    high

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

  • 1-2 clutch slipping

    medium

    A plausible cause — test and verify before replacing parts.

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