OBD-II code · Powertrain (generic)

P0243 Turbocharger/Supercharger Wastegate Actuator A

Generic fault on wastegate actuator A. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.

Is it safe to drive with P0243?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

  • Most likelyActuator failed

Symptoms

  • Check engine light on
  • Significant power loss / limp mode
  • Possible blue or black smoke from exhaust
  • Whistling or hissing sound from intake

Repair at a glance

Difficulty
Medium
DIY friendly
Best left to a mechanic
Typical labour
1–6 h
Emissions test
Likely to fail
After the fix
A drive cycle is needed before the light stays off
Parts involved
Wastegate Actuator A, Actuator Wiring

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.