P0159 2006 Ford Fusion Code - O2 Sensor Circuit Slow Response Bank 2 Sensor 2
Quick Answer
The heated oxygen sensor (HO2S) monitor tracks the rate of voltage change during the rise and fall of the HO2S signal. Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear 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
- P0159 2006 Ford Fusion indicates O2 Sensor Circuit Slow Response Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear 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.
Code P0159 2006 Ford Fusion Description
What are the Possible Causes of the DTC P0159 2006 Ford Fusion?
- Faulty Rear Heated Oxygen Sensor Bank 2
- Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
- Rear 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 P0159 2006 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0159 2006 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 P0159 2006 Ford Fusion code?
Need more information on how to fix the P0159 2006 Ford Fusion code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0159 2006 Ford Fusion code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0159 2006 Ford Fusion Code
What does the OBDII code P0159 mean for a 2006 Ford Fusion?
P0159 indicates that the oxygen sensor in Bank 2 Sensor 2 is not responding as quickly as expected, suggesting a slow circuit response.
What are the symptoms of a P0159 code in a 2006 Ford Fusion?
Symptoms may include poor fuel economy, failed emissions tests, possible rough idling, and the check engine light being illuminated.
What causes the P0159 code in a 2006 Ford Fusion?
Common causes include a faulty oxygen sensor, exhaust leaks, damaged wiring or connectors, or a failing catalytic converter.
Which oxygen sensor is Bank 2 Sensor 2 on a 2006 Ford Fusion?
Bank 2 Sensor 2 is the downstream oxygen sensor located after the catalytic converter on the side of the engine opposite the #1 cylinder.
Can a bad catalytic converter trigger the P0159 code?
Yes, a failing catalytic converter may affect the downstream oxygen sensor’s performance and trigger this code.
How can I fix the P0159 code on my 2006 Ford Fusion?
Repairs may include replacing the Bank 2 Sensor 2 oxygen sensor, fixing any exhaust leaks, repairing damaged wiring, or addressing catalytic converter issues.
Can I drive my 2006 Ford Fusion with a P0159 code?
While the car may still be drivable, prolonged driving with this code can lead to reduced fuel efficiency and potential damage to the catalytic converter.
How do I diagnose the P0159 code in a 2006 Ford Fusion?
Start by inspecting the wiring and connectors for damage, checking for exhaust leaks, and testing the Bank 2 Sensor 2 oxygen sensor with a multimeter or scanner.
Is replacing the oxygen sensor always necessary for a P0159 code?
Not always. The issue could be related to wiring, exhaust leaks, or the catalytic converter, so proper diagnosis is essential before replacing parts.
How much does it cost to fix the P0159 code on a 2006 Ford Fusion?
The repair cost depends on the cause. Replacing an oxygen sensor may cost $100-$300, while fixing wiring or exhaust leaks or replacing a catalytic converter can vary significantly.
Discuss the causes and fixes for P0159 2006 Ford Fusion OBDII Code
Code P0159 2006 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.
