Turbo/Supercharger Wastegate Actuator Stuck Open
2003-2009 Toyota 4Runner 4.0L V6
Description
The wastegate actuator is stuck in the open position, preventing the turbo from building proper boost pressure.
Symptoms
- Check Engine Light
- No boost pressure
- Significant loss of power
- Engine feels naturally aspirated
- Poor acceleration at all speeds
Common Causes
- Wastegate actuator rod seized
- Actuator diaphragm ruptured
- Wastegate valve carbon buildup
- Vacuum line disconnected
- Actuator linkage broken
Diagnostic Steps
- Check wastegate actuator vacuum line
- Manually operate wastegate actuator rod
- Inspect actuator diaphragm for leaks
- Check for carbon deposits on wastegate valve
- Verify boost pressure with gauge
Repair Notes
Replace wastegate actuator. Clean carbon from wastegate valve and housing. Check turbo shaft play.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P3004 on Other Vehicles
Toyota 4Runner
2003-2009 4.7L V8
Toyota 4Runner
2010-2024 4.0L V6
Toyota 86
2017-2020 2.0L H4
Toyota Alphard
2023-2025 2.4L I4 Turbo T24A-FTS
Toyota Alphard
2023-2025 2.5L I4 Hybrid A25A-FXS
Toyota Altezza
1998-2005 2.0L I4 3S-GE BEAMS
Toyota Altezza
1998-2005 2.0L I6 1G-FE
Toyota Aqua
2011-2021 1.5L I4 Hybrid 1NZ-FXE
Common Questions
What does code P3004 mean on a 2003-2009 Toyota 4Runner?
P3004 stands for "Turbo/Supercharger Wastegate Actuator Stuck Open". The wastegate actuator is stuck in the open position, preventing the turbo from building proper boost pressure.
What are the symptoms of P3004 on a Toyota 4Runner?
Common symptoms of P3004 include: Check Engine Light, No boost pressure, Significant loss of power, Engine feels naturally aspirated, Poor acceleration at all speeds.
What causes P3004 on a 2003-2009 Toyota 4Runner?
Common causes of P3004 include: Wastegate actuator rod seized, Actuator diaphragm ruptured, Wastegate valve carbon buildup, Vacuum line disconnected, Actuator linkage broken.