P3005critical severityPowertrain
Turbo/Supercharger Wastegate Actuator Stuck Closed
on 2016 Land Rover Discovery 5.0L V8 · AWD
What this code means
The wastegate actuator is stuck in the closed position, causing excessive boost pressure. This is a critical condition that can cause engine damage.
Symptoms
- Check Engine Light
- Overboost condition
- Engine knock/detonation
- Boost pressure beyond specification
- Possible engine damage if not addressed
- Fuel enrichment at full boost
Common causes
- Wastegate actuator rod seized closed
- Actuator solenoid stuck energized
- Wastegate valve carbon welded shut
- Control rod bent or binding
- PCM commanding max boost erroneously
Diagnostic steps
- Check boost pressure immediately - compare to spec
- Inspect wastegate actuator rod movement
- Test actuator solenoid de-energized state
- Check for carbon deposits seizing valve
- Review PCM boost target values
Repair notes
Immediately address to prevent engine damage. Replace wastegate actuator. Inspect turbo and engine for damage from overboost.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1