Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
The P0035 code means the vehicle's onboard diagnostic system has detected: Turbo/Super Charger Bypass Valve Control Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $650 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Inconsistent turbo boost levels
- Engine hesitation under acceleration
- Possible boost surge or flutter
Probable Causes (Ranked by Likelihood)
- Sticking or worn turbo bypass valve Very High
- Vacuum leak in bypass valve actuator line High
- Faulty bypass valve solenoid Moderate
- Damaged or corroded wiring in the circuit Moderate
Step-by-Step Diagnostic Procedure
-
Confirm P0035 with a scan tool and review freeze frame data
-
Inspect the turbo bypass valve for sticking or mechanical damage
-
Check vacuum lines to the bypass valve actuator for leaks
-
Test bypass valve solenoid operation using a scan tool
Frequently Asked Questions
What does P0035 mean?
P0035 means the turbo or supercharger bypass valve is not operating within its expected range, resulting in inconsistent boost pressure control.
Can P0035 damage my turbo?
If left unrepaired, improper bypass valve operation can lead to overboosting or underboosting, which may cause turbo damage over time.
How do I fix P0035?
Common fixes include replacing a stuck bypass valve, repairing vacuum leaks in the actuator line, or replacing the bypass valve solenoid.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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