POWERSTROKE-P2201 serious Power Stroke ›

NOx Sensor Circuit Range/Performance (Bank 1)

The POWERSTROKE-P2201 (Power Stroke) diesel fault code means: NOx Sensor Circuit Range/Performance (Bank 1). This is a serious severity code.

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Keep driving?
Short distances only
DIY difficulty
intermediate
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What Are the Symptoms of POWERSTROKE-P2201?

  • Check Engine Light on
  • Emissions or DEF system warning message
  • Possible reduced power if the fault is not repaired

What Causes POWERSTROKE-P2201? (Most Likely First)

  • Failed NOx sensor High
  • Damaged wiring or a corroded connector near the exhaust High
  • Sensor power or ground problem Moderate
  • Exhaust leak near the sensor Low

Can I Still Drive with POWERSTROKE-P2201?

Short distances only. POWERSTROKE-P2201 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.

Frequently Asked Questions

What does P2201 mean on a Power Stroke?

P2201 means NOx Sensor Circuit Range/Performance (Bank 1). The bank 1 NOx sensor is reporting, but its reading does not make sense for the operating conditions.

Is P2201 a Power Stroke-specific code?

No. P2201 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 Ford uses to set it on its diesels are in Ford service information.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose POWERSTROKE-P2201?

  1. Find which NOx sensor is bank 1 on your truck in the service information.

  2. Inspect the sensor connector and harness for heat damage.

  3. Check the sensor power and ground before replacing it.

Sources 1

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

  • SAE J2012Diagnostic Trouble Code Definitions (defines P2201 as a generic OBD-II code)

P2201 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 P2201 Duramax serious NOx Sensor Circuit Range/Performance (Bank 1) PACCAR moderate NOx Sensor Circuit Range/Performance (Bank 1 Sensor 1)

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