P0155 2007 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 2007 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 2007 Ford Fusion Description
What are the Possible Causes of the DTC P0155 2007 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 2007 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 2007 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 2007 Ford Fusion code?
Need more information on how to fix the P0155 2007 Ford Fusion code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0155 2007 Ford Fusion code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0155 2007 Ford Fusion Code
1. What does OBDII code P0155 on a 2007 Ford Fusion mean?
The code P0155 indicates a malfunction in the O2 heater circuit for Bank 2 Sensor 1, which is the upstream oxygen sensor on the passenger side of the vehicle.
2. What are the common symptoms of O2 Heater Circuit Bank 2 Sensor 1 issue (P0155) in a 2007 Ford Fusion?
Common symptoms include poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light on the dashboard.
3. What are the possible causes of OBDII code P0155 in a 2007 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 Bank 2 Sensor 1 issue (P0155) in my 2007 Ford Fusion?
You can diagnose the problem by using an OBDII scanner to retrieve the fault code, visually inspecting the O2 sensor and its wiring, testing the sensor's heating element, and checking for continuity in the circuit.
5. What are the repair options for fixing OBDII code P0155 on a 2007 Ford Fusion?
Repair options may include replacing the Bank 2 Sensor 1 oxygen sensor, repairing or replacing damaged wiring or connectors, checking and replacing fuses if necessary, or reprogramming the PCM.
6. Can I continue driving my 2007 Ford Fusion with O2 Heater Circuit Bank 2 Sensor 1 issue (P0155)?
While the vehicle may still be operational with this issue, it is recommended to address the problem promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.
7. How much does it typically cost to repair OBDII code P0155 on a 2007 Ford Fusion?
The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor if the oxygen sensor needs replacement.
8. Are there any DIY tips for troubleshooting O2 Heater Circuit Bank 2 Sensor 1 problem (P0155) in a 2007 Ford Fusion?
DIY tips include checking for visible damage to the sensor and its wiring, testing the sensor's resistance with a multimeter, and ensuring all connections are secure before seeking professional help if needed.
9. How often does the O2 Heater Circuit Bank 2 Sensor 1 issue (P0155) occur in a 2007 Ford Fusion?
The occurrence of this issue can vary, but it is not uncommon in vehicles with higher mileage or those exposed to harsh driving conditions or poor maintenance practices.
10. Can a P0155 code on a 2007 Ford Fusion be a false alarm?
While rare, false alarms can occur due to intermittent electrical issues or sensor malfunctions. It is advisable to confirm the diagnosis with a professional mechanic before proceeding with any repairs.
Discuss the causes and fixes for P0155 2007 Ford Fusion OBDII Code
Code P0155 2007 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.
