OBD Guide

P23BC

NOx Sensor Calibration Memory Bank 1 Sensor 3

P23BC is an OBD-II diagnostic trouble code meaning: NOx Sensor Calibration Memory Bank 1 Sensor 3. Common causes: nox sensor malfunction, problems with wiring or connectors. 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
  • Incorrect NOx sensor readings

Causes

  • NOx sensor malfunction
  • Problems with wiring or connectors
  • Sensor contamination
  • Errors in ECU software
  • Mechanical damage to the sensor

How to Fix

  1. Check the integrity of wiring and connectors
  2. Clean the sensor from dirt
  3. Check and update ECU software
  4. Replace NOx sensor if necessary
  5. Check the operation of the SCR system

Related codes

Error P23BC by Vehicle Brand

FAQ

What does the P23BC code mean?

P23BC is an OBD-II diagnostic trouble code that indicates: NOx Sensor Calibration Memory Bank 1 Sensor 3

What causes a P23BC error code?

The most common causes of P23BC include: NOx sensor malfunction; Problems with wiring or connectors; Sensor contamination; Errors in ECU software.

How do I fix a P23BC diagnostic trouble code?

To fix P23BC: Check the integrity of wiring and connectors. Clean the sensor from dirt. Check and update ECU software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P23BC?

Yes, but get it checked soon

How much does it cost to fix P23BC?

The estimated repair cost for P23BC is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat