P0167 Mercedes-Benz Code - O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 3
Quick Answer
The rear heated oxygen sensor (or sensor 3 for some vehicles), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Heated Oxygen Sensor Bank 2 Sensor 3, Heated Oxygen Sensor Bank 2 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 2 Sensor 3 circuit poor electrical connection. 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
- P0167 Mercedes-Benz indicates O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 3.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor Bank 2 Sensor 3, Heated Oxygen Sensor Bank 2 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 2 Sensor 3 circuit poor electrical connection.
- 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.
Code P0167 Mercedes-Benz Description
What are the Possible Causes of the DTC P0167 Mercedes-Benz?
- Faulty Heated Oxygen Sensor Bank 2 Sensor 3
- Heated Oxygen Sensor Bank 2 Sensor 3 harness is open or shorted
- Heated Oxygen Sensor Bank 2 Sensor 3 circuit poor electrical connection
How to Fix the DTC P0167 Mercedes-Benz?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0167 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0167 Mercedes-Benz Code
1. What are the common symptoms of OBDII code P0167 on a Mercedes-Benz?
The common symptoms of OBDII code P0167 (O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 3) on a Mercedes-Benz may include poor fuel economy, rough idling, hesitation during acceleration, and an illuminated check engine light.
2. What does the OBDII code P0167 mean for a Mercedes-Benz?
OBDII code P0167 indicates a malfunction in the O2 sensor heater circuit of Bank 2 Sensor 3 in a Mercedes-Benz, specifically related to the heating element of the sensor.
3. What are the possible causes of OBDII code P0167 on a Mercedes-Benz?
The possible causes of OBDII code P0167 on a Mercedes-Benz include a faulty O2 sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or issues with the engine control module (ECM).
4. How can I diagnose OBDII code P0167 on my Mercedes-Benz?
To diagnose OBDII code P0167 on a Mercedes-Benz, you can use an OBDII scanner to retrieve the code and then inspect the O2 sensor, wiring, connectors, and fuses for any visible signs of damage or malfunction.
5. Can I still drive my Mercedes-Benz with OBDII code P0167?
While it may be possible to drive your Mercedes-Benz with OBDII code P0167, it is not recommended as it can lead to poor engine performance and potential damage. It is best to address the issue promptly.
6. How do I repair OBDII code P0167 on a Mercedes-Benz?
To repair OBDII code P0167 on a Mercedes-Benz, you may need to replace the faulty O2 sensor, repair any damaged wiring or connectors, or replace a blown fuse. In some cases, resetting the ECM may also be necessary.
7. Is it possible to reset OBDII code P0167 on a Mercedes-Benz without repairs?
While you can reset OBDII code P0167 on a Mercedes-Benz using an OBDII scanner, it is important to note that the underlying issue causing the code will still persist. It is recommended to address the root cause of the problem.
8. How much does it typically cost to repair OBDII code P0167 on a Mercedes-Benz?
The cost to repair OBDII code P0167 on a Mercedes-Benz can vary depending on the extent of the issue, the parts needed for replacement, and labor costs. On average, the repair can range from $100 to $300 or more.
9. Can a DIY enthusiast fix OBDII code P0167 on a Mercedes-Benz?
A DIY enthusiast with the necessary tools and knowledge of automotive repairs may be able to fix OBDII code P0167 on a Mercedes-Benz, especially if the issue is related to simple wiring or sensor replacement. However, complex issues may require professional assistance.
10. How important is it to address OBDII code P0167 promptly on a Mercedes-Benz?
It is crucial to address OBDII code P0167 promptly on a Mercedes-Benz to prevent further damage to the engine, ensure optimal fuel efficiency, and maintain overall vehicle performance. Ignoring the code can lead to more serious issues over time.
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