P1512 Boost Pressure High (Diesel)
What does P1512 mean on a Toyota?
P1512 — Boost Pressure High (Diesel). This Toyota-enhanced code applies to Hilux, Land Cruiser Prado D-4D.
Common causes of P1512
- Stuck turbo vanes holding boost high
- Failed boost control solenoid
- Blocked wastegate reference
- Biased boost sensor reading low
- Controller over-commanding
How to fix P1512
- Verify actual boost with a gauge
- Exercise turbo vane movement
- Test the control solenoid
- Validate the boost sensor
- Free or replace the sticking component