P0033 Code - Turbocharger Bypass Solenoid Valve Control Circuit
Quick Answer
The dual scroll turbocharger incorporates a wastegate that is controlled by a pressure differential, which is determined by the Engine Control Module (ECM) using a PWM solenoid, to regulate the pressure ratio of the compressor. Common causes include Faulty Turbocharger Bypass Solenoid Valve, Turbocharger Bypass Solenoid Valve harness is open or shorted, Turbocharger Bypass Solenoid Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0033 indicates Turbocharger Bypass Solenoid Valve Control Circuit.
- Common causes
- Common causes include Faulty Turbocharger Bypass Solenoid Valve, Turbocharger Bypass Solenoid Valve harness is open or shorted, Turbocharger Bypass Solenoid Valve circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0033 Description
As engine load and RPM increase the turbocharger bypass solenoid parameter should remain commanded ON by the ECM. As soon as the throttle closes the turbocharger bypass solenoid parameter should be commanded OFF by the ECM, to allow the turbocharger bypass valve to open and allow the turbocharger air to recirculate, thereby preventing compressor surging.
What are the Possible Causes of the DTC P0033?
- Faulty Turbocharger Bypass Solenoid Valve
- Turbocharger Bypass Solenoid Valve harness is open or shorted
- Turbocharger Bypass Solenoid Valve circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0033?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0033 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0033 code?
Need more information on how to fix the P0033 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0033 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P0033 Buick — Turbocharger Bypass Solenoid Valve Control Circuit
- P0033 Cadillac — Turbocharger Bypass Solenoid Valve Control Circuit
- P0033 Chevrolet — Turbocharger Bypass Solenoid Valve Control Circuit
- P0033 GMC — Turbocharger Bypass Solenoid Valve Control Circuit
- P0033 Saab — Turbocharger Bypass Valve Control Circuit
Frequently Asked Questions about P0033 Code
1. What are the common symptoms of OBDII code P0033 (Turbocharger Bypass Solenoid Valve Control Circuit)?
- Common symptoms include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.
2. What are the possible causes of OBDII code P0033?
- Possible causes may include a faulty turbocharger bypass solenoid valve, damaged wiring or connectors in the control circuit, or a problem with the engine control module.
3. How can I diagnose the cause of OBDII code P0033?
- Diagnosis typically involves using a scan tool to retrieve the code, checking the turbocharger bypass solenoid valve for proper operation, inspecting the wiring and connectors for damage, and testing the control circuit for continuity.
4. Can I continue driving my vehicle with OBDII code P0033?
- It is not recommended to continue driving with this code, as it can lead to further damage to the turbocharger system and potentially cause engine performance issues.
5. How can I repair OBDII code P0033?
- Repair may involve replacing the faulty turbocharger bypass solenoid valve, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module.
6. Are there any preventive measures to avoid OBDII code P0033?
- Regular maintenance of the turbocharger system, including checking for leaks and ensuring proper operation of components, can help prevent issues that may trigger this code.
7. Can a DIY enthusiast fix OBDII code P0033 at home?
- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair OBDII code P0033 at home. However, it is recommended to consult a professional if unsure.
8. How much does it typically cost to repair OBDII code P0033 at a repair shop?
- Repair costs can vary depending on the specific cause of the code and the labor rates of the repair shop. It is advisable to obtain quotes from multiple shops for comparison.
9. Will resetting the Check Engine Light make OBDII code P0033 go away?
- Resetting the Check Engine Light may temporarily turn it off, but if the underlying issue triggering OBDII code P0033 is not addressed, the light is likely to come back on.
10. Is OBDII code P0033 a common issue in specific vehicle makes or models?
- This code is more commonly found in vehicles equipped with turbocharged engines, but it can occur in various makes and models that have a turbocharger bypass solenoid valve in their systems.
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