P0155 2008 Ford Fusion Code - O2 Heater Circuit Bank 2 Sensor 1
Quick Answer
During testing the heated oxygen sensor (HO2S) heaters are checked for open and short circuits and excessive current draw. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground. 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
- P0155 2008 Ford Fusion indicates O2 Heater Circuit Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground.
- 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 P0155 2008 Ford Fusion Description
What are the Possible Causes of the DTC P0155 2008 Ford Fusion?
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0155 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0155 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.
Need more information about the P0155 2008 Ford Fusion code?
Need more information on how to fix the P0155 2008 Ford Fusion code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0155 2008 Ford Fusion code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0155 2008 Ford Fusion Code
1. What does OBDII code P0155 on a 2008 Ford Fusion mean?
This code indicates an issue with the O2 heater circuit for Bank 2 Sensor 1, which is the oxygen sensor located in the exhaust system before the catalytic converter on the side with cylinder 2.
2. What are the common symptoms of OBDII code P0155 on a 2008 Ford Fusion?
Common symptoms include poor fuel economy, rough idle, engine misfires, and the illumination of the Check Engine Light on the dashboard.
3. What are the possible causes of OBDII code P0155 on a 2008 Ford Fusion?
Potential causes include a faulty oxygen sensor, damaged wiring or connectors in the O2 sensor circuit, a blown fuse, or a problem with the PCM (Powertrain Control Module).
4. How can I diagnose the O2 heater circuit issue for Bank 2 Sensor 1 on a 2008 Ford Fusion?
To diagnose the problem, you can use a multimeter to test the resistance of the O2 sensor heater circuit, visually inspect the wiring and connectors for damage, and check for any blown fuses related to the circuit.
5. Can I still drive my 2008 Ford Fusion with OBDII code P0155 present?
While it may be possible to drive the vehicle with this code, it is not recommended as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time. It is best to address the issue promptly.
6. How do I repair OBDII code P0155 on my 2008 Ford Fusion?
Repair options include replacing the Bank 2 Sensor 1 oxygen sensor if it is found to be faulty, repairing any damaged wiring or connectors in the O2 heater circuit, and ensuring all related fuses are in working order.
7. Is it necessary to reset the Check Engine Light after fixing OBDII code P0155 on a 2008 Ford Fusion?
Yes, it is recommended to reset the Check Engine Light using an OBDII scanner after addressing the underlying issue. This will clear the code from the system and ensure that the repair was successful.
8. How much does it cost to repair OBDII code P0155 on a 2008 Ford Fusion?
The cost of repairing this code can vary depending on the specific issue causing it. Replacing the oxygen sensor or repairing wiring may range from $100 to $300, while more complex PCM-related issues can cost more.
9. Can I fix OBDII code P0155 on a 2008 Ford Fusion myself?
If you have experience with automotive repairs and access to the necessary tools, you may be able to fix this code yourself. However, if you are unsure or inexperienced, it is recommended to seek assistance from a qualified mechanic.
10. How long does it take to repair OBDII code P0155 on a 2008 Ford Fusion?
The repair time can vary depending on the exact cause of the issue and your level of experience. Replacing an oxygen sensor typically takes around 1-2 hours, while diagnosing and repairing wiring or fuse issues may take longer.
Discuss the causes and fixes for P0155 2008 Ford Fusion OBDII Code
Code P0155 2008 Ford Fusion comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
