Code Definition

P0033 — Turbo/Super Charger Bypass Valve Control Circuit

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

About P0033

P0033 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 P0033 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 P0033 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

DTC P0033 identifies an electrical fault in the control circuit for the turbocharger or supercharger bypass valve, the valve that vents or recirculates charge pressure so the forced induction system is not overloaded when the throttle closes. On electronically controlled applications the Engine Control Module operates this valve, or its control solenoid, with a switched or pulse width modulated signal and monitors the circuit for correct current and voltage. P0033 sets when the ECM sees an open circuit or a short to power or ground in that control circuit rather than a mechanical valve fault. ...

Join TaT to view the complete code information and diagnostic details.

Quick Facts