Code Definition

P004F — Turbo/Super Charger Boost Control Solenoid 2 Circuit Intermittent

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

About P004F

P004F 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 P004F is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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 P004F 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 P004F fault code is set when the Engine Control Module (ECM) detects intermittent readings or signal disruptions in the circuit of the turbocharger or supercharger boost control solenoid, specifically for Solenoid 2. This solenoid plays a vital role in the turbocharging system, controlling the flow of pressurised air (boost) to the engine. It functions through an electronic signal from the ECM, modulating the boost pressure according to the engine's operational needs. Intermittent issues in this solenoid's control circuit can hinder the ECM's ability to consistently regulate the turbocharg...

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