P0246 moderate

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.

My Garage →

Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $80 - $400 (parts and labor)

Recommended Tool

ANCEL AD310 OBD-II Scanner

Best-selling code reader on Amazon. Reads and clears check engine codes on any 1996+ vehicle. Under $30.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Every Tech Needs This

AstroAI Digital Multimeter

Essential for diagnosing sensor codes, checking voltage, and testing circuits. Under $15 and pays for itself on the first job.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

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

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

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.