Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance
The P0046 code means the vehicle's onboard diagnostic system has detected: Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $650 (parts and labor)
Best-selling code reader on Amazon. Reads and clears check engine codes on any 1996+ vehicle. Under $30.
Essential for diagnosing sensor codes, checking voltage, and testing circuits. Under $15 and pays for itself on the first job.
Affiliate links — we earn a commission at no extra cost to you.
What Are the Symptoms of P0046?
- Check Engine Light on
- Erratic turbo boost levels
- Hesitation during acceleration
- Possible overboosting or underboosting
What Causes P0046? (Most Likely First)
- Failing boost control solenoid Very High
- Clogged or restricted vacuum lines to wastegate High
- Intermittent wiring connection at solenoid Moderate
- Sticking wastegate actuator Moderate
Can I Still Drive with P0046?
Short distances only. P0046 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0046 mean?
P0046 indicates the turbo or supercharger boost control solenoid is not operating within its expected range, leading to inconsistent boost pressure.
Can P0046 cause engine damage?
If the code causes overboosting, it can potentially damage engine components. Have it diagnosed promptly to avoid costly repairs.
What parts might need replacement?
Common parts include the boost control solenoid, vacuum lines to the wastegate, and in some cases the wastegate actuator itself.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0046?
-
Confirm P0046 with scan tool and monitor boost pressure data
-
Inspect vacuum lines to the wastegate for cracks or blockages
-
Test boost control solenoid operation and resistance
-
Check wastegate actuator for proper movement
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
P0046 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
Which Vehicles Commonly Get P0046?
- 2010-2020 Ford F-150 EcoBoost
- 2012-2018 Volkswagen GTI
- 2011-2017 Chevrolet Cruze 1.4T
- 2013-2019 Hyundai Sonata 2.0T
Explore More
Was this helpful?
Send this to whoever is fixing the car — your mechanic, or the person asking what the light means.