MAXXFORCE-P0545 moderate MaxxForce ›

EGT Sensor 1 Low Input

The MAXXFORCE-P0545 (MaxxForce) diesel fault code means: EGT Sensor 1 Low Input. This is a moderate severity code.

My Garage →
Keep driving?
Yes, but fix soon
DIY difficulty
intermediate
Estimated cost
$150-$400
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What Are the Symptoms of MAXXFORCE-P0545?

  • CEL
  • Incomplete regen

What Causes MAXXFORCE-P0545? (Most Likely First)

  • Failed upstream DOC EGT sensor Likely

Can I Still Drive with MAXXFORCE-P0545?

Yes, but fix soon. MAXXFORCE-P0545 is rated moderate severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring it.

Frequently Asked Questions

What is P0545 on a MaxxForce 7 (6.4L)?

P0545 on a MaxxForce 7 (6.4L) (2007-2013) indicates: EGT Sensor 1 Low Input. This is a known fault code on the MaxxForce engine family and typically points to the causes listed above.

Can I drive with P0545 on my MaxxForce?

Yes, you can generally drive with this code, but diagnose soon to prevent secondary damage.

How much does it cost to fix MaxxForce P0545?

Repair cost is typically $150-$400 depending on the underlying cause and shop rate. Many MaxxForce faults (especially EGR cooler, head bolt, and VGT repairs) are major expenses that drove fleet owners to repower with Cummins or retire these trucks early.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose MAXXFORCE-P0545?

  1. Check EGT sensor resistance.

  2. Replace sensor.

Sources 1

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

  • SAE J2012Diagnostic Trouble Code Definitions (defines P0545 as a generic OBD-II code)

P0545 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 P0545 Duramax moderate Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 1 Power Stroke moderate EGT Sensor Low (Bank 1 Sensor 1)

Which Vehicles Commonly Get MAXXFORCE-P0545?

  • International TerraStar MaxxForce 7
  • International 4300 DuraStar MaxxForce 7
  • International WorkStar 7300 MaxxForce 7
  • IC Bus CE-Series MaxxForce 7

Explore More

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

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