What is the P0033 fault code and what does it mean? What is the description of Turbocharger/Supercharge Bypass Valve Control Circuit Malfunction? How can you fix P0033 fault code What are the causes and symptoms of the P0033 error code?
What is the P0033 fault code? What does it signify?
If the powertrain control module (PCM) detects a voltage signal from the turbocharger/supercharger bypass valve control circuit that is outside the manufacturer’s specified settings, it will store a fault code P0033.
The bypass valve is used on turbocharged and supercharged motors. This valve’s purpose is to prevent excessive pressure when the throttle closes. The throttle opens when you press the accelerator pedal. The turbo then pumps compressed air into your cylinders. When the accelerator pedal is released, the throttle will close. The turbo continues to work and excess pressure builds between the turbo and the throttle. Due to the back pressure, turbo does not work properly. The turbo takes some time to kick in after the accelerator pedal is again pressed. The boost solenoid or bypass valve stabilizes the pressure and ensures that it remains within the vehicle’s set limits. The engine could be damaged by excessive boost, turbocharger, or overpressure.
Vehicles susceptible to the P0033 fault code include but aren’t limited to various models of Volkswagen and Dodge, Pontiac Pontiac Pontiac Pontiac Pontiac Pontiac Ford, GM Audi Skoda and Renault.
What is the P0033 Fault Code?
- – Defective turbocharger/supercharger bypass valve
- – Defective turbocharger/supercharger bypass valve actuator
- – Defective boost solenoid
- – Circuit problems related to bypass valves such as loose connectors or damaged wires
- – Air leakage due to damaged intake air lines or loose clamps
- – Intercooler leaks
- – Defective turbo pressure sensor
- – The PCM is not functioning properly or requires software updating
What are the symptoms for P0033 fault code?
These symptoms are often associated with the trouble code P0033
- – Illumination and control of the check engine light
- Low engine performance
- – The turbo makes clicking, hissing, or humming sounds.
- Excessive black smoke from exhaust
- – Spark plugs contaminated
- – Engine and transmission overheating
- High engine temperatures cause ignition in the combustion chamber
- – Triggering misfire and knocking, as well as other turbo related fault codes
How to Fix the P0033 Fault Code
- – Test the pressure in the intake between the turbocharger & the throttle.
- – If pressure is too low, check for cracks or looseness in the suction pipes, intercooler, and clamps.
- – Verify that the bypass valve is not stuck in an open or closed position. If it is, you should replace it.
- The turbo pressure sensor could be defective if the pressure falls within the recommended range.
Also, the intercooler could be damaged and leak. Cracked hoses can be difficult to spot and often are invisible. The hoses can crack and become brittle from liquids and dirt that has accumulated under them.
How Serious Is the P0033 Fault Coding?
This code must be treated immediately. If the problem persists, severe engine damage could occur. The engine may be unable to perform properly or consume excessive fuel.
