P0164 Code - O2 Sensor Circuit High Voltage Bank 2 Sensor 3
Quick Answer
The O2 Sensor Circuit High Voltage Bank 2 Sensor 3 diagnostic trouble code (DTC) P0164 indicates that there is a high voltage condition in the oxygen sensor circuit for the third oxygen sensor on bank 2 of the engine. Common causes include Faulty oxygen sensor, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the sensor. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0164 indicates O2 Sensor Circuit High Voltage Bank 2 Sensor 3.
- Common causes
- Common causes include Faulty oxygen sensor, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the sensor.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code P0164 Description
The O2 Sensor Circuit High Voltage Bank 2 Sensor 3 diagnostic trouble code (DTC) P0164 indicates that there is a high voltage condition in the oxygen sensor circuit for the third oxygen sensor on bank 2 of the engine. This sensor is typically located downstream of the catalytic converter. The oxygen sensor plays a crucial role in monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.
Common Causes of P0164
- Faulty oxygen sensor
- Wiring or connector issues in the oxygen sensor circuit
- Exhaust leaks near the sensor
- Engine running rich
- Faulty ECM
Symptoms of P0164
- Decreased fuel efficiency
- Rough idling or stalling
- Check Engine Light illuminated
- Increased emissions
- Engine misfires
How to Fix P0164
- Diagnose the issue by using a scan tool to read the DTC and monitor the oxygen sensor's voltage output.
- Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace as needed.
- Test the oxygen sensor using a multimeter to check for proper voltage output. Replace if necessary.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnostics may be required to identify any underlying engine issues.
Cost to Fix P0164
The typical repair costs for addressing a P0164 code can vary depending on the specific cause of the issue. In general, replacing an oxygen sensor can cost between $100 and $300, including parts and labor. However, if the problem is related to wiring or connector issues, the cost may be lower. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
Tech Notes for P0164
When is the Code Detected?
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Code P0164 Information for Specific Makes
- P0164 Mercedes-Benz — O2 Sensor Circuit High Voltage Bank 2 Sensor 3
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