Code Definition

P005F — Turbo/Super Charger Boost Control Supply Voltage Circuit High - Circuit B

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P005F

P005F is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P005F is stored, the module has detected a signal or supply voltage higher than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P005F is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The boost control solenoids and electric actuators in a forced induction system are powered from a switched supply feed, taken from the main relay, a dedicated boost control relay, or an internal supply driver inside the Engine Control Module (ECM), with circuit B identifying the second of those feeds serving the second turbocharger or the opposite bank of wastegate and vane actuators. The ECM monitors the voltage present on that feed and expects it to sit at system voltage when energised and to fall to zero when the circuit is switched off. DTC P005F is set when the ECM measures the circuit B...

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