P25B3

What it means

Wastegate A is mechanically stuck open. Exhaust gas bypasses the turbine even at low load — turbo cannot reach target speed, boost is permanently low and the engine feels asthmatic. Common causes are seized linkage, broken return spring or carbon-locked wastegate flap.

Is it safe to drive?

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

• Seized wastegate linkage

  high

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

• Broken return spring

  medium

  A plausible cause — test and verify before replacing parts.

• Carbon or debris buildup preventing free movement

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P25B3 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?