AutoCodes – Generic – P1167

P1167 Code - Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring Bank 2

Quick Answer

The Air/Fuel Ratio (A/F) sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. Common causes include Faulty Air/Fuel Ratio Sensor 1, Air/Fuel Ratio Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1167 indicates Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring Bank 2.
Common causes: Common causes include Faulty Air/Fuel Ratio Sensor 1, Air/Fuel Ratio Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor 1 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 31,419

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1167 Description

The Air/Fuel Ratio (A/F) sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. The A/F sensor transmits output voltage to the Engine Control Module (ECM). A heater for the sensor element is embedded in the A/F sensor (sensor 1). It is activated and heats the sensor to stabilize and speed the detection of oxygen content by controlling current flowing through the heater. An increase in the current levels off as the applied voltage to the element electrode reaches a certain range because the amount of oxygen which is led through the diffusion layer is limited. The current amperage is proportional to oxygen content in the exhaust gas, so the air/fuel ratio is detected by the measurement of the current amperage. The ECM compares a set target air/fuel ratio with the detected air/fuel ratio and controls the fuel injection timing.
If the A/F sensor (sensor 1) voltage is low, the air/fuel ratio is lean, and the ECM uses A/F feedback control to issue a Rich command. If the A/F sensor (sensor 1) voltage is high, the air/fuel ratio is rich, and the ECM uses A/F feedback control to issue a Lean command.

OBDII Code P1167 - Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring Bank 2 - AutoCodes.com — P1167 Code - Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring Bank 2

What does this mean?

What are the Possible Causes of the DTC P1167?

Faulty Air/Fuel Ratio Sensor 1
Air/Fuel Ratio Sensor 1 harness is open or shorted
Air/Fuel Ratio Sensor 1 circuit poor electrical connection

How to Fix the DTC P1167?

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 P1167 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.

Need more information about the P1167 code?

Need more information on how to fix the P1167 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1167 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1167 Acura — Air/Fuel Ratio Sensor 1 Heater System Malfunction
P1167 Audi — Mass Air Flow Sensor 2 Unplausible Signal
P1167 Chrysler — Capacitor Voltage 1
P1167 Dodge — Capacitor Voltage 1
P1167 Honda — Air/Fuel Ratio Sensor 1 Heater System Malfunction
P1167 Hyundai — O2 Sensor System Lambda Controller at the Limit Bank 2
P1167 Infiniti — Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring Bank 2
P1167 Isuzu — Fuel System Rich During Deceleration Fuel Cut-Off Bank 1
P1167 Jeep — Capacitor Voltage 1
P1167 KIA — O2 Sensor System Lambda Controller at the Limit Bank 2
P1167 Nissan — Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring Bank 2
P1167 Suzuki — HO2S11 Rich In Decel Fuel Cutoff
P1167 Volkswagen — Mass Air Flow Sensor 2 Unplausible Signal

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1167 Code

1. What are the common symptoms of OBDII code P1167?

The common symptoms of OBDII code P1167 include poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light.

2. What does the OBDII code P1167 indicate?

OBDII code P1167 indicates an issue with the Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring on Bank 2 of the vehicle.

3. What are the possible causes of OBDII code P1167?

Possible causes of OBDII code P1167 include a faulty rear oxygen sensor, wiring or connector issues, a vacuum leak, exhaust system leaks, or a problem with the engine's air-fuel mixture.

4. How can I diagnose the OBDII code P1167?

Diagnosing OBDII code P1167 involves using an OBDII scanner to retrieve the code, inspecting the rear oxygen sensor and its connections, checking for exhaust or vacuum leaks, and testing the sensor's voltage.

5. Can I drive my vehicle with the OBDII code P1167?

It is not recommended to drive your vehicle with the OBDII code P1167, as it can lead to poor engine performance and potential damage if left unresolved.

6. How do I repair OBDII code P1167?

To repair OBDII code P1167, you may need to replace the heated rear oxygen sensor 2 on Bank 2, repair any wiring or connector issues, fix any exhaust or vacuum leaks, and reset the fault codes.

7. Does OBDII code P1167 affect emissions?

Yes, OBDII code P1167 can affect emissions by causing the vehicle to run inefficiently and produce higher levels of harmful emissions.

8. What is the importance of the Heated Rear Oxygen Sensor 2 in the vehicle's exhaust system?

The Heated Rear Oxygen Sensor 2 monitors the oxygen levels in the vehicle's exhaust system to help the engine control module adjust the air-fuel mixture for optimal performance and emissions.

9. How long does it take to repair OBDII code P1167?

The repair time for OBDII code P1167 can vary depending on the exact cause of the issue and the complexity of the repair, but it typically takes a few hours to complete.

10. Can a DIY enthusiast fix OBDII code P1167 at home?

While some DIY enthusiasts may be able to diagnose and repair OBDII code P1167 at home, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.