AutoCodes – Ford – P0059 Ford

P0059 Ford Code - HO2S Heater Resistance Bank 2 Sensor 1

Quick Answer

The universal HO2S, sometimes referred to as a wideband oxygen sensor, uses the typical HO2S combined with a current controller in the Powertrain Control Module (PCM) to infer an air to fuel ratio relative to the stoichiometric air to fuel ratio. Common causes include Faulty Universal Heated Oxygen Sensor Bank 2 Sensor 1 (HO2S21), Universal Heated Oxygen Sensor Bank 2 Sensor 1 circuit open shorted to ground, Universal Heated Oxygen Sensor Bank 2 Sensor 1 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: P0059 Ford indicates HO2S Heater Resistance Bank 2 Sensor 1.
Common causes: Common causes include Faulty Universal Heated Oxygen Sensor Bank 2 Sensor 1 (HO2S21), Universal Heated Oxygen Sensor Bank 2 Sensor 1 circuit open shorted to ground, Universal Heated Oxygen Sensor Bank 2 Sensor 1 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 27,401

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 Sep 08, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0059 Ford Description

The universal HO2S, sometimes referred to as a wideband oxygen sensor, uses the typical HO2S combined with a current controller in the Powertrain Control Module (PCM) to infer an air to fuel ratio relative to the stoichiometric air to fuel ratio. This is accomplished by balancing the amount of oxygen ions pumped in or out of a measurement chamber within the sensor. The typical HO2S within the universal HO2S detects the oxygen content of the exhaust gas in the measurement chamber. The oxygen content inside the measurement chamber is maintained at the stoichiometric air to fuel ratio by pumping oxygen ions in and out of the measurement chamber. As the exhaust gasses get richer or leaner, the amount of oxygen that must be pumped in or out to maintain a stoichiometric air to fuel ratio in the measurement chamber varies in proportion to the air to fuel ratio. The amount of current required to pump the oxygen ions in or out of the measurement chamber is used to measure the air to fuel ratio. The measured air to fuel ratio is actually the output from the current controller in the PCM and not a signal that comes directly from the sensor.
The universal HO2S also uses a self contained reference chamber to make sure an oxygen differential is always present. The oxygen for the reference chamber is supplied by pumping small amounts of oxygen ions from the measurement chamber into the reference chamber. The universal HO2S does not need access to outside air.
Part to part variance is compensated for by placing a resistor in the connector. This resistor trims the current measured by the current controller in the PCM.
The universal HO2S heater is embedded with the sensing element allowing the engine to enter closed loop operation sooner. The heating element heats the sensor to a temperature of 780°C to 830°C (1,436°F to 1,526°F).
This Diagnostic Trouble Code (DTC) sets when the heater current requirements are too low or too high in the Universal Heated Oxygen Sensor Bank 2 Sensor 1 (HO2S21) circuit (if equipped) or HTR21 circuit (if equipped).

OBDII Code P0059 Ford - HO2S Heater Resistance Bank 2 Sensor 1 - AutoCodes.com — P0059 Ford Code - HO2S Heater Resistance Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0059 Ford?

Faulty Universal Heated Oxygen Sensor Bank 2 Sensor 1 (HO2S21)
Universal Heated Oxygen Sensor Bank 2 Sensor 1 circuit open shorted to ground
Universal Heated Oxygen Sensor Bank 2 Sensor 1 circuit poor electrical connection

How to Fix the DTC P0059 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0059 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

P0059 2015 Ford F150 — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2016 Ford F150 — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2017 Ford F150 — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2018 Ford F150 — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2019 Ford F150 — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2020 Ford F150 — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2006 Ford Fusion — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2007 Ford Fusion — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2008 Ford Fusion — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2009 Ford Fusion — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2010 Ford Fusion — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2011 Ford Fusion — HO2S Heater Resistance Bank 2 Sensor 1
P0059 2012 Ford Fusion — HO2S Heater Resistance Bank 2 Sensor 1

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 P0059 Ford Code

1. What are the common symptoms of OBDII code P0059 on a Ford vehicle?

- Common symptoms include poor fuel economy, rough idle, engine stalling, and the illumination of the check engine light.

2. What does the OBDII code P0059 for a Ford vehicle mean?

- The code P0059 indicates a malfunction in the heater circuit of the oxygen sensor (HO2S) located on Bank 2 Sensor 1.

3. What are the possible causes of OBDII code P0059 on a Ford, related to HO2S Heater Resistance Bank 2 Sensor 1?

- The most common causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).

4. How can I diagnose the issue causing OBDII code P0059 on my Ford related to HO2S Heater Resistance Bank 2 Sensor 1?

- You can use a multimeter to test the resistance of the oxygen sensor's heater circuit, visually inspect the wiring and connectors for damage, and check the fuse related to the sensor.

5. Can I continue driving my Ford with OBDII code P0059 related to HO2S Heater Resistance Bank 2 Sensor 1?

- It is not recommended to continue driving with this code unresolved, as it can lead to poor engine performance and potentially cause damage to other components.

6. How can I repair OBDII code P0059 on my Ford related to HO2S Heater Resistance Bank 2 Sensor 1?

- The repair typically involves replacing the oxygen sensor on Bank 2 Sensor 1, repairing any damaged wiring or connectors, and resetting the fault code using an OBDII scanner.

7. Is it possible to reset the check engine light after repairing OBDII code P0059 on my Ford?

- Yes, you can reset the check engine light using an OBDII scanner after repairing the issue causing code P0059 related to HO2S Heater Resistance Bank 2 Sensor 1.

8. How much does it cost to repair OBDII code P0059 on a Ford vehicle related to HO2S Heater Resistance Bank 2 Sensor 1?

- The cost of repair can vary depending on the labor rates and parts prices in your area, but typically, replacing the oxygen sensor and addressing any wiring issues can range from $100 to $300.

9. Can a DIY enthusiast fix OBDII code P0059 on a Ford related to HO2S Heater Resistance Bank 2 Sensor 1?

- Yes, if you have some experience with automotive repairs and the necessary tools, you can attempt to fix this issue yourself by following repair guides and instructions specific to your Ford model.

10. Will OBDII code P0059 on a Ford vehicle related to HO2S Heater Resistance Bank 2 Sensor 1 affect emissions or vehicle performance?

- Yes, this code can lead to increased emissions, reduced fuel efficiency, and potentially affect the overall performance and drivability of the vehicle.