AutoCodes – Ford – P0151 2009 Ford Fusion

P0151 2009 Ford Fusion Code - O2 Sensor Circuit Low Voltage Bank 2 Sensor 1

Quick Answer

The Powertrain Control Module (PCM) monitors the heated oxygen sensor (HO2S) for a circuit concern. Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 2 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: P0151 2009 Ford Fusion indicates O2 Sensor Circuit Low Voltage Bank 2 Sensor 1.
Common causes: Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 2 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,625

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0151 2009 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the heated oxygen sensor (HO2S) for a circuit concern. The test fails when the PCM detects a concern with one of the circuits used to determine the oxygen content in the exhaust gas.

OBDII Code P0151 2009 Ford Fusion - O2 Sensor Circuit Low Voltage Bank 2 Sensor 1 - AutoCodes.com — P0151 2009 Ford Fusion Code - O2 Sensor Circuit Low Voltage Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0151 2009 Ford Fusion?

Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

How to Fix the DTC P0151 2009 Ford Fusion?

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 does this mean?

Code Tech Notes

Replacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0151 2009 Ford Fusion 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 P0151 2009 Ford Fusion code?

Need more information on how to fix the P0151 2009 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0151 2009 Ford Fusion code diagnosed by a professional: Find a repair shop in your area

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 P0151 2009 Ford Fusion Code

1. What does the OBDII code P0151 for a 2009 Ford Fusion mean?

- The code P0151 indicates a low voltage condition in the O2 sensor circuit of Bank 2 Sensor 1 in a 2009 Ford Fusion.

2. What are the common symptoms of a P0151 code in a 2009 Ford Fusion?

- Common symptoms include poor fuel economy, rough idling, hesitation during acceleration, and an illuminated check engine light.

3. What are the possible causes of a P0151 code in a 2009 Ford Fusion?

- Possible causes include a faulty O2 sensor, damaged wiring or connectors in the O2 sensor circuit, exhaust leaks, or issues with the engine's air-fuel ratio.

4. How can I diagnose a P0151 code in a 2009 Ford Fusion?

- Diagnosing a P0151 code typically involves using an OBDII scanner to read the code, inspecting the O2 sensor and its connections, checking for exhaust leaks, and testing the sensor's voltage output.

5. How can I repair a P0151 code in a 2009 Ford Fusion?

- Repair options may include replacing the O2 sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or addressing any underlying issues affecting the air-fuel mixture.

6. Can I continue driving my 2009 Ford Fusion with a P0151 code?

- It is not recommended to drive with a P0151 code for an extended period, as it can lead to decreased fuel efficiency and potential damage to the engine over time.

7. How much does it cost to fix a P0151 code in a 2009 Ford Fusion?

- The cost of fixing a P0151 code can vary depending on the specific issue causing the code, but it may range from $100 to $500 or more, including parts and labor.

8. Is a P0151 code a serious issue in a 2009 Ford Fusion?

- While a P0151 code may not cause immediate harm to the vehicle, it can lead to decreased performance and fuel efficiency if left unresolved, so it is best to address the issue promptly.

9. How often does a P0151 code occur in a 2009 Ford Fusion?

- A P0151 code can occur intermittently or persistently, depending on the underlying cause, and may reappear if the root issue is not properly resolved.

10. Can I clear a P0151 code in a 2009 Ford Fusion without fixing the underlying problem?

- Clearing the code without addressing the underlying issue will only temporarily turn off the check engine light, but the problem will likely resurface until properly repaired.