OBD-II Generic Error Code P0033: How to Fix It
Medium 30 minutes to 2 hours Medium Severity
Verified June 2026
- Error Code
- P0033
- Brand
- OBD-II Generic
- Product Type
- automotive
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30 minutes to 2 hours
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Tools You'll Need
- OBD-II scanner
- Digital multimeter
- Vacuum pump (if applicable)
- Basic hand tools (socket set, screwdrivers)
How to Fix Error Code P0033
-
Check for Other Diagnostic Trouble Codes (DTCs)
-
Inspect the Turbocharger Bypass Valve Connector and Wiring
Disconnect the battery before working on electrical components. -
Test the Bypass Valve Solenoid
-
Check for Vacuum Leaks (If Applicable)
-
Test the Control Circuit Voltage and Ground
Use caution when working near hot engine components. -
Replace the Turbocharger Bypass Valve
Ensure the engine is cool before working near the turbo.
Parts You May Need
Turbocharger bypass valve solenoid
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OBD-II scanner
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Turbocharger bypass valve solenoid
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OBD-II scanner
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Turbocharger bypass valve solenoid
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OBD-II scanner
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Turbocharger bypass valve solenoid
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OBD-II scanner
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When to Call a Professional
If you are not comfortable working with electrical circuits or the turbocharger system, or if the issue persists after performing all steps, consult a certified mechanic. Turbocharger repairs can be complex and require specialized tools.Frequently Asked Questions
Can I drive with error code P0033?
You may be able to drive short distances, but it's not recommended. The vehicle may experience reduced power, poor fuel economy, and potential turbo damage. Have it diagnosed as soon as possible.
Will replacing the bypass valve fix P0033?
Often yes, but not always. The issue could be wiring, connectors, or the ECM. Test the circuit components before replacing parts.
How much does it cost to fix P0033?
Costs vary. DIY repair might cost $50-$150 for a new valve. Professional repair can range from $200 to $500 or more, depending on labor and parts.
What is the difference between P0033 and P0034?
P0033 is a general circuit fault, while P0034 indicates a low voltage condition in the same circuit. Both relate to the turbocharger bypass valve control circuit.