P0039

DTC P0039, sometimes indicated as P003900 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing turbo/super charger bypass valve control circuit range/performance.

The turbocharger system is designed to provide forced induction to the engine. The turbocharger system includes a turbocharger, wastegate, and bypass valve. The turbocharger is connected to the exhaust manifold and the wastegate is connected to the exhaust manifold and the turbocharger. The bypass valve is connected between the turbocharger and the intake manifold.
The turbocharger system is designed to provide a boost to the engine by increasing the pressure of the air entering the engine. The boost pressure is controlled by the bypass valve. The bypass valve is opened when the engine is under a light load and the wastegate is closed. This allows the exhaust gases to bypass the turbocharger and the wastegate and increases the pressure of the air entering the engine.
The turbocharger system is also designed to provide a boost to the engine by increasing the pressure of the air entering the engine. The boost pressure is controlled by the bypass valve. The bypass valve is opened when the engine is under a heavy load and the wastegate is open. This allows the exhaust gases to bypass the turbocharger and the wastegate and increases the pressure of the air entering the engine.
The turbocharger system is designed to provide a boost to the engine by increasing the pressure of the air entering the engine. The boost pressure is controlled by the bypass valve. The bypass valve is opened when the engine is under a heavy load and the wastegate is closed. This allows the exhaust gases to bypass the turbocharger and the wastegate and increases the pressure of the air entering the engine.
The turbocharger system is designed to provide a boost to the engine by increasing the pressure of the air entering the engine. The boost pressure is controlled by the bypass valve. The bypass valve is opened when the engine is under a heavy load and the wastegate is open. This allows the exhaust gases to bypass the turbocharger and the wastegate and increases the pressure of the air entering the engine.
The turbocharger system is designed to provide

• P0039: Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
• P0039: Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance
• P0039: Turbo/Super Charger Bypass Control CKT Performance
• P0039: Turbocharger (TC) bypass valve/supercharger (SC) bypass valve, control – range/performance problem
• P0039 00: Turbocharger (TC) bypass valve/supercharger (SC) bypass valve, control - range/performance problem