P2593 serious

Turbocharger Boost Control 'B' Position Not Reached

The P2593 code means the vehicle's onboard diagnostic system has detected: Turbocharger Boost Control 'B' Position Not Reached. This is a serious severity code.

My Garage →
Keep driving?
Short distances only
DIY difficulty
hard
Estimated cost
$400 - $2500 (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 on
  • Insufficient boost from secondary turbo
  • Significant power loss at higher RPMs
  • Engine may stall under load
  • Poor towing or hauling performance

Probable Causes (Ranked by Likelihood)

  • Secondary turbocharger vanes stuck or seized Very High
  • Boost control solenoid for Bank 2 turbo failed High
  • Exhaust leak before secondary turbo Moderate
  • Twin-turbo control valve malfunction Moderate

Step-by-Step Diagnostic Procedure

  1. Read freeze frame data and confirm P2593 is stored

  2. Test secondary turbo actuator operation

  3. Check for exhaust leaks at turbo connections

  4. Inspect boost control solenoid for Bank 2

Frequently Asked Questions

What does P2593 mean?

P2593 indicates an issue with the turbocharger boost control 'b' position not reached. This affects the PCM's ability to properly control turbocharger boost levels.

Can I drive with a P2593 code?

You can drive short distances with reduced power. Have it repaired promptly to avoid further turbo system damage.

How much does it cost to fix P2593?

Repairs typically cost $400 - $2500, depending on the specific component that has failed.

Sources

This page is built from documented references. Verify against your own service info before repair work.

Explore More

Search codes Vehicle-specific fixes Guides By make

Was this helpful?

Share carcodefinder.com with a friend who needs to decode their check engine light.

Browse by symptom → Read repair guides → Fixes by vehicle →