P0155 Ford Code - O2 Heater Circuit Bank 2 Sensor 1
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. 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 Ford 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 Ford Description
What are the Possible Causes of the DTC P0155 Ford?
- 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 Ford?
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 Ford 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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Information for Specific Ford Models
- P0155 1997 Ford F150 — O2 Heater Circuit Bank 2 Sensor 1
- P0155 1998 Ford F150 — O2 Heater Circuit Bank 2 Sensor 1
- P0155 1999 Ford F150 — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2000 Ford F150 — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2001 Ford F150 — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2002 Ford F150 — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2003 Ford F150 — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2006 Ford Fusion — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2007 Ford Fusion — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2008 Ford Fusion — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2009 Ford Fusion — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2010 Ford Fusion — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2011 Ford Fusion — O2 Heater Circuit Bank 2 Sensor 1
- P0155 2012 Ford Fusion — O2 Heater Circuit Bank 2 Sensor 1
Frequently Asked Questions about P0155 Ford Code
1. What is the meaning of OBDII code P0155 Ford?
- OBDII code P0155 for Ford indicates an issue with the O2 sensor heater circuit in Bank 2 Sensor 1, which is the first sensor on the passenger side of the vehicle.
2. What are common symptoms of OBDII code P0155 Ford?
- Common symptoms include increased fuel consumption, poor engine performance, rough idling, and the illumination of the Check Engine light.
3. What are the possible causes of OBDII code P0155 Ford?
- The most common causes include a faulty O2 sensor, damaged wiring or connectors in the heater circuit, a blown fuse, or a problem with the vehicle's computer.
4. How do I diagnose the O2 heater circuit in Bank 2 Sensor 1 for OBDII code P0155 Ford?
- Use a multimeter to check for continuity in the sensor's heater circuit, inspect the wiring and connectors for damage, and ensure the fuse related to the O2 sensor is intact.
5. How can I repair OBDII code P0155 Ford?
- Repair options include replacing the O2 sensor in Bank 2 Sensor 1, repairing any damaged wiring or connectors, ensuring the fuse is in good condition, or resetting the Check Engine light after fixing the issue.
6. Can I drive my vehicle with OBDII code P0155 Ford?
- It is not recommended to drive the vehicle with this code present, as it can lead to poor fuel economy and engine performance issues. It's best to address the problem as soon as possible.
7. How much does it cost to repair OBDII code P0155 Ford?
- The cost of repair can vary depending on the underlying issue. Replacing the O2 sensor can range from $100 to $300, while fixing wiring or fuse problems may be less expensive.
8. Will OBDII code P0155 Ford pass emissions testing?
- The vehicle is likely to fail emissions testing with this code present, as it indicates a problem with the O2 sensor heater circuit, which is crucial for proper emissions control.
9. How often does OBDII code P0155 Ford occur in Ford vehicles?
- This code can occur in Ford vehicles equipped with OBDII systems, particularly in vehicles that have been driven for an extended period or have high mileage.
10. Is it possible to prevent OBDII code P0155 Ford from occurring?
- While some factors leading to this code may be unavoidable, regular maintenance, prompt repairs of sensor issues, and ensuring proper wiring connections can help prevent its occurrence.
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