What are the common causes of P005F?

A short to power in the boost control B supply circuit. A corroded or bridged connector in the boost control B supply. A failed boost control B solenoid. A wiring harness fault feeding voltage to the supply.

Read the code and note the boost control B supply fault. Test the boost control B supply circuit for a short to power. Inspect the boost control B connector for corrosion or bridging. Check the harness routing for chafing that could short. Replace the boost control B solenoid if the short is internal. Clear the code and retest.

P005F

Turbocharger/Supercharger Boost Control B Supply Voltage Circuit High

System: Fuel and air metering (P code)
Lamp: Check Engine Light
Category: Powertrain - Fuel/Air Metering

What it means

P005F means Turbocharger/Supercharger Boost Control B Supply Voltage Circuit High.

Check these first

A short to power in the boost control B supply circuit
A corroded or bridged connector in the boost control B supply
A failed boost control B solenoid
A wiring harness fault feeding voltage to the supply

What to do next

Read the code and note the boost control B supply fault
Test the boost control B supply circuit for a short to power
Inspect the boost control B connector for corrosion or bridging
Check the harness routing for chafing that could short
Replace the boost control B solenoid if the short is internal
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.