DURAMAX-P0217 critical Duramax ›

Engine Coolant Over Temperature Condition

The DURAMAX-P0217 (Duramax) diesel fault code means: Engine Coolant Over Temperature Condition. This is a critical severity code.

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Keep driving?
No — stop driving
DIY difficulty
advanced
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What Are the Symptoms of DURAMAX-P0217?

  • Temperature gauge high or an overheating warning
  • Possible reduced power to protect the engine
  • Possible coolant smell or steam

What Causes DURAMAX-P0217? (Most Likely First)

  • Low coolant level or a leak High
  • Cooling fan or fan clutch not working High
  • Restricted radiator or charge air cooler stack Moderate
  • Thermostat stuck closed or a weak water pump Moderate

Can I Still Drive with DURAMAX-P0217?

No — stop driving. DURAMAX-P0217 is rated critical severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.

Frequently Asked Questions

What does P0217 mean on a Duramax?

P0217 means Engine Coolant Over Temperature Condition. The engine computer has measured coolant temperature above its safe limit.

Is P0217 a Duramax-specific code?

No. P0217 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 GM uses to set it on its diesels are in GM service information.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose DURAMAX-P0217?

  1. Stop and let the engine cool before opening the cooling system.

  2. Check the coolant level and look for leaks.

  3. Check fan operation and airflow through the radiator, then confirm temperature with a separate thermometer.

Sources 1

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

  • SAE J2012Diagnostic Trouble Code Definitions (defines P0217 as a generic OBD-II code)

P0217 on Other Platforms

The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:

Gas / Automotive (OBD-II) Generic OBD-II definition for P0217 Bobcat critical Engine Coolant Overtemperature Condition Kubota critical Engine Coolant Over Temperature Condition Power Stroke moderate Engine Coolant Over Temperature Condition Yanmar critical Engine Coolant Overtemperature

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More Duramax codes → Diesel home All diesel codes Heavy-duty Guides

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