Code result

P0235

Turbocharger Boost Sensor A Circuit Malfunction

High severity

What it means

The ECU detected an electrical fault in the primary (A) boost pressure sensor circuit. The signal does not match plausibility checks against MAP, RPM, and load. With no boost feedback, the ECU typically limits boost via the wastegate.

Is it safe to drive?

No — stop driving

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.

Most likely causes

  • Boost pressure sensor failed

    high

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

  • Wiring or connector fault

    medium

    A plausible cause — test and verify before replacing parts.

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