OBD Guide

P229F

NOx Sensor Circuit Range/Performance Bank 1 Sensor 2

P229F is an OBD-II diagnostic trouble code meaning: NOx Sensor Circuit Range/Performance Bank 1 Sensor 2. Common causes: nox sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Increased fuel consumption
  • Reduced engine power
  • Increased NOx emissions
  • Possible problems with passing technical inspection

Causes

  • NOx sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Sensor power problems
  • Sensor contamination or mechanical damage

How to Fix

  1. Check the condition of the sensor wiring and connectors
  2. Check sensor parameters using a diagnostic scanner
  3. Clean sensor connector contacts
  4. If necessary, replace the NOx sensor
  5. Check and update ECU software if necessary

Related codes

Error P229F by Vehicle Brand

FAQ

What does the P229F code mean?

P229F is an OBD-II diagnostic trouble code that indicates: NOx Sensor Circuit Range/Performance Bank 1 Sensor 2

What causes a P229F error code?

The most common causes of P229F include: NOx sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Sensor power problems.

How do I fix a P229F diagnostic trouble code?

To fix P229F: Check the condition of the sensor wiring and connectors. Check sensor parameters using a diagnostic scanner. Clean sensor connector contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P229F?

Yes, but get it checked soon

How much does it cost to fix P229F?

The estimated repair cost for P229F is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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