OBD Guide

P223E

O2 Sensor Reference Resistance Out Of Range Bank 1

P223E is an OBD-II diagnostic trouble code meaning: O2 Sensor Reference Resistance Out Of Range Bank 1. Common causes: bank 1 oxygen sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Increased fuel consumption
  • Unstable engine operation at idle
  • Check Engine Light Illuminates
  • Reduced engine power
  • Increased level of harmful emissions

Causes

  • Bank 1 oxygen sensor malfunction
  • Open or short circuit in the sensor circuit
  • Corrosion of contacts or connectors
  • Wiring Harness Problems
  • ECU malfunction (rare)

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Clean the contacts of the sensor connector
  3. Check the resistance of the oxygen sensor
  4. Replace the oxygen sensor if necessary
  5. Check the operation of the system after repair

Related codes

Error P223E by Vehicle Brand

FAQ

What does the P223E code mean?

P223E is an OBD-II diagnostic trouble code that indicates: O2 Sensor Reference Resistance Out Of Range Bank 1

What causes a P223E error code?

The most common causes of P223E include: Bank 1 oxygen sensor malfunction; Open or short circuit in the sensor circuit; Corrosion of contacts or connectors; Wiring Harness Problems.

How do I fix a P223E diagnostic trouble code?

To fix P223E: Check the integrity of the sensor wiring harness. Clean the contacts of the sensor connector. Check the resistance of the oxygen sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P223E?

Yes, but get it checked soon

How much does it cost to fix P223E?

The estimated repair cost for P223E is $28–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat