Turbocharger/Supercharger Wastegate Solenoid A High
The P0246 code means the vehicle's onboard diagnostic system has detected: Turbocharger/Supercharger Wastegate Solenoid A High. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $80 - $400 (parts and labor)
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Common Symptoms
- Check Engine Light illuminated
- Underboost condition -- turbo feels weak
- Engine in limp mode
- Sluggish acceleration
- Poor fuel economy at higher RPMs
Probable Causes (Ranked by Likelihood)
- Open circuit in wastegate solenoid wiring Very High
- Faulty wastegate solenoid coil (open internally) High
- Disconnected or corroded solenoid connector High
- Broken ground wire to wastegate solenoid Moderate
- PCM driver circuit failure Low
Frequently Asked Questions
Can I drive with code P0246?
You can drive short distances. A high circuit typically causes the wastegate to stay open, resulting in underboost rather than overboost. The engine will lack power but is at lower risk of damage.
What is the difference between P0245 and P0246?
P0245 indicates a low (short to ground) circuit, which can cause overboost. P0246 indicates a high (open circuit) condition, which typically causes underboost since the solenoid cannot close the wastegate.
How long does a wastegate solenoid last?
Wastegate solenoids typically last 80,000-150,000 miles. Heat exposure from the turbocharger accelerates wear, and the electromagnetic coil inside can burn out over time.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Measure wastegate solenoid resistance -- an open reading (OL/infinite) indicates a burnt-out coil
-
Check for battery voltage at the solenoid power wire with key on -- if missing, trace the power supply circuit
-
Verify the PCM ground wire for the solenoid has continuity and less than 1 ohm resistance
-
Inspect the solenoid connector for pushed-out pins, corrosion, or heat damage
-
Replace the solenoid if coil is open; repair wiring if power or ground circuit is broken
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
Commonly Affected Vehicles
- 2010-2020 Ford F-150 EcoBoost
- 2012-2019 Volkswagen Jetta Turbo
- 2014-2021 Subaru WRX
- 2011-2018 Chevrolet Cruze Turbo
- 2013-2020 BMW X3
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