AutoCodes – Ford – P0151 2008 Ford Fusion

P0151 2008 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 2008 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.

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Code Popularity 2,547

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
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Code P0151 2008 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 2008 Ford Fusion - O2 Sensor Circuit Low Voltage Bank 2 Sensor 1 - AutoCodes.com — P0151 2008 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 2008 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 2008 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 2008 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.

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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 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P0151 on a 2008 Ford Fusion?

- Common symptoms include poor fuel economy, rough idling, sluggish acceleration, and the illumination of the check engine light.

2. What does the OBDII code P0151 indicate on a 2008 Ford Fusion?

- The code P0151 indicates that the O2 sensor circuit for Bank 2 Sensor 1 is detecting a low voltage condition.

3. What are the possible causes of OBDII code P0151 on a 2008 Ford Fusion?

- Potential causes include a faulty O2 sensor, wiring issues in the O2 sensor circuit, exhaust leaks, engine misfires, or a failing PCM.

4. How can I diagnose the O2 sensor circuit low voltage issue on Bank 2 Sensor 1 in a 2008 Ford Fusion?

- You can diagnose the problem by checking the O2 sensor wiring for any damage, testing the sensor's voltage output, and inspecting for any exhaust leaks near the sensor.

5. Can I drive my 2008 Ford Fusion with the OBDII code P0151?

- It is not recommended to drive the vehicle with the code P0151 present, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.

6. How can I repair the O2 sensor circuit low voltage issue on Bank 2 Sensor 1 in a 2008 Ford Fusion?

- The repair may involve replacing the O2 sensor, repairing any damaged wiring, fixing exhaust leaks, addressing engine misfires, or reprogramming the PCM.

7. Can I reset the check engine light after fixing the OBDII code P0151 on my 2008 Ford Fusion?

- Yes, you can reset the check engine light using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the code.

8. What is the role of Bank 2 Sensor 1 in the O2 sensor system of a 2008 Ford Fusion?

- Bank 2 Sensor 1 is the O2 sensor located before the catalytic converter on the side of the engine bank with cylinder 2 in a V6 or V8 engine.

9. How do I prevent the recurrence of OBDII code P0151 on my 2008 Ford Fusion?

- Regular maintenance, such as replacing the O2 sensors at recommended intervals, addressing engine issues promptly, and ensuring proper exhaust system function, can help prevent the code from reoccurring.

10. Is it possible to drive my 2008 Ford Fusion with a faulty Bank 2 Sensor 1 O2 sensor?

- It is not recommended to drive the vehicle with a faulty O2 sensor, as it can lead to decreased fuel efficiency, engine performance issues, and potential damage to the catalytic converter.