Code result

P27AA

Pressure Control Solenoid D Data Incompatible

High severity

What it means

The calibration data programmed for pressure control solenoid D does not match the format expected by the transmission controller.

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

  • Replacement solenoid incompatible with software version

    high

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

  • Calibration code format does not match controller version

    medium

    A plausible cause — test and verify before replacing parts.

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