Turbo Boost Pressure Not Detected - Mechanical
The MAXXFORCE-P2262-11 (MaxxForce) diesel fault code means: Turbo Boost Pressure Not Detected - Mechanical. This is a serious severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- advanced
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What Are the Symptoms of MAXXFORCE-P2262-11?
- Significant loss of power
- Check Engine light
- Possible smoke
What Causes MAXXFORCE-P2262-11? (Most Likely First)
- Large charge-air leak (disconnected hose or failed charge-air cooler) High
- Turbocharger failure High
- Turbo actuator or vanes stuck Medium
- Boost sensor or its line blocked Low
Can I Still Drive with MAXXFORCE-P2262-11?
No — stop driving. MAXXFORCE-P2262-11 is rated serious severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What does P2262 mean on a MaxxForce?
P2262 means Turbo Boost Pressure Not Detected - Mechanical. The control module sees little or no rise in boost pressure when it expects the turbocharger to be producing boost, pointing to a mechanical cause.
Is P2262 a MaxxForce-specific code?
No. P2262 is a generic OBD-II code defined by SAE J2012, so it means the same thing on any vehicle that sets it. The exact conditions Navistar uses to set it on its diesels are in Navistar service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose MAXXFORCE-P2262-11?
Compare commanded and actual boost on a scan tool under load.
Inspect the charge-air plumbing and pressure-test it.
Inspect the turbocharger for shaft play and wheel damage.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- California Code of Regulations, Title 13 section 1971.1 (Heavy-Duty OBD)malfunction criteria, section (e)
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