OBD Guide

P22FC

NOx Sensor Performance - Slow Response Low to High Bank 1 Sensor 2

P22FC is an OBD-II diagnostic trouble code meaning: NOx Sensor Performance - Slow Response Low to High Bank 1 Sensor 2. Common causes: nox sensor contamination, problems with the sensor electrical circuit. Estimated repair cost: $167–444.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$167–444 (est.)

Symptoms

  • Increased fuel consumption
  • Reduced engine power
  • Check Engine light comes on
  • Dips during acceleration
  • Unstable engine idling

Causes

  • NOx sensor contamination
  • Problems with the sensor electrical circuit
  • Malfunction of the NOx sensor itself
  • Wiring Harness Problems
  • ECU software errors

How to Fix

  1. Check NOx sensor electrical circuit
  2. Clean the sensor from dirt
  3. Check ECU software for updates
  4. Replace NOx sensor if necessary
  5. Check the condition of the wiring harness

Related codes

Error P22FC by Vehicle Brand

FAQ

What does the P22FC code mean?

P22FC is an OBD-II diagnostic trouble code that indicates: NOx Sensor Performance - Slow Response Low to High Bank 1 Sensor 2

What causes a P22FC error code?

The most common causes of P22FC include: NOx sensor contamination; Problems with the sensor electrical circuit; Malfunction of the NOx sensor itself; Wiring Harness Problems.

How do I fix a P22FC diagnostic trouble code?

To fix P22FC: Check NOx sensor electrical circuit. Clean the sensor from dirt. Check ECU software for updates. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P22FC?

Yes, but get it checked soon

How much does it cost to fix P22FC?

The estimated repair cost for P22FC is $167–444. Actual cost depends on your vehicle, location, and labor rates.

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