OBD Guide

P0164

O2 Sensor Circuit High Voltage Bank 2 Sensor 3

P0164 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit High Voltage Bank 2 Sensor 3. Common causes: bank 2 sensor 3 oxygen sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Increased fuel consumption
  • Reduced engine power
  • Unstable operation at idle

Causes

  • Bank 2 Sensor 3 Oxygen Sensor Malfunction
  • Open or short circuit in the sensor circuit
  • Sensor Grounding Problems
  • Engine ECU malfunction
  • Very rich fuel mixture

How to Fix

  1. Check the continuity of the oxygen sensor circuit
  2. Check sensor resistance and voltage
  3. Replace the oxygen sensor if necessary
  4. Check and clean circuit contacts
  5. Scan the ECU for other errors

Related codes

Error P0164 by Vehicle Brand

FAQ

What does the P0164 code mean?

P0164 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit High Voltage Bank 2 Sensor 3

What causes a P0164 error code?

The most common causes of P0164 include: Bank 2 Sensor 3 Oxygen Sensor Malfunction; Open or short circuit in the sensor circuit; Sensor Grounding Problems; Engine ECU malfunction.

How do I fix a P0164 diagnostic trouble code?

To fix P0164: Check the continuity of the oxygen sensor circuit. Check sensor resistance and voltage. Replace the oxygen sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0164?

Limited driving only, diagnose soon

How much does it cost to fix P0164?

The estimated repair cost for P0164 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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