P0167 - O2 Sensor Circuit High Voltage (Common in 2005-2010 Ford F-150)

Quick Answer

P0167 means: P0167 indicates a high voltage reading from the oxygen sensor circuit in bank 2, sensor 2.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with P0167? While it's not an immediate danger, it's advisable to address it soon to avoid performance issues.

Common Questions

What does P0167 mean and how does it affect my car?

The P0167 code indicates an issue with the oxygen sensor circuit in your vehicle. A high voltage reading from the sensor can lead to poor fuel efficiency and increased emissions. Ignoring it may result in more serious engine problems over time. It’s crucial to address this issue to maintain optimal vehicle performance and comply with emissions regulations.

What are the most common causes of P0167 and how much does it cost to fix?

The most common causes include a faulty oxygen sensor, damaged wiring, and exhaust leaks. Repair costs can range from $100 for minor wiring repairs to $1,200 for ECU replacements, depending on the complexity of the issue.

Can I drive my car with P0167 or should I stop immediately?

While you may not need to stop immediately, it is advisable to address the P0167 code soon. Continuing to drive with this issue can lead to poor fuel economy and increased emissions, potentially causing more significant problems down the line.

How can I diagnose P0167 myself using GeekOBD APP?

Using the GeekOBD APP, perform an OBD2 scan to retrieve the P0167 code. Review the freeze frame data for additional context and check the oxygen sensor's voltage output using the app's diagnostic tools to pinpoint the issue.

What vehicles are most commonly affected by P0167?

Common vehicles that frequently experience the P0167 code include the 2005-2010 Ford F-150, 2006-2011 Chevrolet Silverado, and 2004-2009 Honda Accord. Be sure to check for any recalls or Technical Service Bulletins (TSBs) related to these models.

How can I prevent P0167 from happening again?

Preventive measures include regular vehicle maintenance, such as checking and replacing oxygen sensors per manufacturer recommendations, inspecting wiring for wear, and fixing any exhaust leaks promptly. Keeping your vehicle's emission system in good condition can help avoid future occurrences of the P0167 code.

What is P0167?

The diagnostic trouble code P0167 indicates an issue with the oxygen sensor circuit, specifically related to the bank 2 sensor 2. This sensor is critical for monitoring the exhaust emissions and helping the engine's computer optimize fuel efficiency. When the P0167 code triggers, it means that the voltage reading from the oxygen sensor is higher than the expected range, which can lead to various performance issues. It often results from faulty wiring, a defective sensor, or exhaust leaks. For vehicle owners, this can manifest as poor fuel economy, increased emissions, and potentially failing emissions tests. Understanding what P0167 means is crucial; ignoring it can lead to more severe engine problems over time. It's essential to address this issue to maintain both vehicle performance and compliance with environmental regulations. Common vehicles affected by this code include the Ford F-150, Chevrolet Silverado, and Honda Accord from the mid-2000s to early 2010s. Addressing the problem promptly can save money on fuel and repairs, keeping your vehicle running smoothly.

System: P - Powertrain (Engine, Transmission, Emissions)

Symptoms

Common symptoms when P0167 is present:

  • The check engine light remains illuminated, indicating a need for diagnostics.
  • The engine may hesitate during acceleration, leading to a sluggish driving experience.
  • Fuel economy can decrease by 10-15%, resulting in more frequent trips to the gas station.
  • You might notice rough idling or stalling, particularly at stoplights or when starting.
  • The vehicle may fail emissions testing due to increased pollution levels.

Possible Causes

Most common causes of P0167 (ordered by frequency):

  1. The most common cause of P0167 is a faulty oxygen sensor, which accounts for about 60% of cases. This can happen due to wear and tear over time.
  2. Another frequent cause is damaged wiring or connectors in the oxygen sensor circuit, often due to exposure to heat and corrosion.
  3. Exhaust leaks can also trigger this code, as they may alter the readings sent to the engine control unit (ECU). Regular inspections can help prevent this.
  4. Less common but serious causes include a malfunctioning engine control unit (ECU), which may require professional diagnosis and replacement.
  5. In rare cases, significant engine issues like a blown head gasket can cause abnormal readings, leading to the P0167 code.

P0167 Repair Costs

Cost Breakdown by Repair Type

Oxygen Sensor Replacement

Replacing the faulty oxygen sensor to restore proper readings.

  • Total: $150 - $300
  • Success rate: 90%
Wiring Repair

Repairing or replacing damaged wiring or connectors in the oxygen sensor circuit.

  • Total: $100 - $200
  • Success rate: 85%
ECU Replacement

Replacing a malfunctioning ECU if it is determined to be the source of the issue.

  • Total: $500 - $1,200
  • Success rate: 70%
Money-Saving Tips for P0167
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional P0167 Diagnosis Process

Follow these systematic steps to accurately diagnose P0167. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for damaged wiring, loose connections, or corrosion at the sensor and its harness (5-10 minutes)

Step 1: Initial visual inspection - Check for damaged wiring, loose connections, or corrosion at the sensor and its harness (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and any related issues (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and any related issues (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to check the voltage output of the oxygen sensor and ensure it's within specifications (20-30 minutes)

Step 3: Component testing - Use a multimeter to check the voltage output of the oxygen sensor and ensure it's within specifications (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After replacing or repairing components, verify proper operation and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - After replacing or repairing components, verify proper operation and clear codes using the GeekOBD APP (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repair has resolved the issue (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repair has resolved the issue (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Oxygen Sensor Replacement in 2006 Ford F-150

Vehicle: 2006 Ford F-150, 120,000 miles

Problem: Customer complained of poor fuel economy and a check engine light.

Diagnosis: After running diagnostics with the GeekOBD APP, the P0167 code was retrieved, indicating a faulty oxygen sensor.

Solution: Replaced the bank 2 sensor 2 oxygen sensor and cleared the codes.

Cost: $250 (sensor cost: $150, labor: $100)

Result: After the repair, the check engine light turned off, and the customer reported improved fuel economy.

Case Study 2: Wiring Issues in a 2008 Chevrolet Silverado

Vehicle: 2008 Chevrolet Silverado, 95,000 miles

Problem: Engine was running rough, and the check engine light was on.

Diagnosis: Diagnostics revealed a P0167 code due to damaged wiring in the oxygen sensor circuit.

Solution: Repaired the damaged wiring and connections to restore proper sensor function.

Cost: $180 (parts: $30, labor: $150)

Result: Vehicle performance improved significantly, and the check engine light stayed off after the repair.

Diagnose P0167

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: P0167
System: Powertrain (Engine, Transmission, Emissions)
Severity: MEDIUM
Category: Engine Codes