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U059E Mercury Code - Invalid Data Received From NOX Sensor 'A'

Quick Answer

The U059E diagnostic trouble code (DTC) for Mercury vehicles indicates that the Engine Control Module (ECM) has detected invalid data coming from the NOx (Nitrogen Oxide) sensor 'A'. Common causes include Faulty NOx sensor 'A', Wiring or connector issues, Malfunctioning ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U059E Mercury indicates Invalid Data Received From NOX Sensor 'A'.
Common causes
Common causes include Faulty NOx sensor 'A', Wiring or connector issues, Malfunctioning ECM.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code U059E Mercury Description

The U059E diagnostic trouble code (DTC) for Mercury vehicles indicates that the Engine Control Module (ECM) has detected invalid data coming from the NOx (Nitrogen Oxide) sensor 'A'. The NOx sensor is responsible for monitoring the levels of nitrogen oxide in the exhaust gases, which helps the ECM adjust the air-fuel mixture to reduce emissions and improve fuel efficiency. When the ECM receives invalid data from the NOx sensor 'A', it can lead to incorrect adjustments being made to the engine, potentially causing drivability issues and increased emissions.

OBDII Code U059E Mercury - Invalid Data Received From NOX Sensor 'A'
U059E Mercury Code - Invalid Data Received From NOX Sensor 'A'

Common Causes of U059E Mercury

  1. Faulty NOx sensor 'A'
  2. Wiring or connector issues
  3. Malfunctioning ECM
  4. Software glitch
  5. Exhaust system leaks

Symptoms of U059E Mercury

  1. Decreased fuel efficiency
  2. Rough idling
  3. Hesitation during acceleration
  4. Stalling
  5. Illumination of the check engine light

How to Fix U059E Mercury

  1. Begin by using a diagnostic scanner to retrieve the trouble codes and pinpoint the issue with the NOx sensor 'A'.
  2. Inspect the wiring and connectors associated with the NOx sensor for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the NOx sensor 'A' using a multimeter to determine if it is functioning correctly. Replace if faulty.
  4. Clear the DTCs from the ECM memory and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to identify any underlying ECM or software issues.

Cost to Fix U059E Mercury

The typical repair costs for addressing the U059E code on a Mercury vehicle can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the final repair costs. For a more accurate estimate, it is recommended to consult with a local auto repair shop.

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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 U059E Mercury Code

1. What are common symptoms of the OBDII code U059E in a Mercury related to the NOx sensor 'A'?

The common symptoms associated with the U059E code in a Mercury include poor fuel efficiency, rough idling, and potential loss of power.

2. What can cause the OBDII code U059E in a Mercury indicating Invalid Data Received From NOX Sensor 'A'?

The U059E code in a Mercury is often triggered by a faulty NOx sensor 'A', wiring issues, or problems with the sensor's connection to the vehicle's electronic control unit (ECU).

3. How should I diagnose the OBDII code U059E in my Mercury related to the NOx sensor 'A'?

To diagnose the U059E code, start by visually inspecting the NOx sensor 'A' and its wiring for any damage. You can also use a diagnostic scanner to check for specific trouble codes and perform testing on the sensor's functionality.

4. Can I continue driving my Mercury with the U059E code related to the NOx sensor 'A'?

It is not recommended to drive your Mercury with the U059E code present, as it can lead to further damage to the vehicle and potentially affect its performance and emissions.

5. How can I repair the OBDII code U059E in my Mercury linked to Invalid Data Received From NOX Sensor 'A'?

Repairing the U059E code typically involves replacing the faulty NOx sensor 'A', repairing any damaged wiring, or addressing any issues with the sensor's connection to the ECU.

6. Are there any DIY tips for fixing the U059E code in a Mercury related to the NOx sensor 'A'?

While some basic troubleshooting steps can be taken, it is advisable to seek professional help for diagnosing and repairing the U059E code to ensure the issue is resolved correctly.

7. Can a faulty NOx sensor 'A' cause other problems in my Mercury besides triggering the U059E code?

Yes, a faulty NOx sensor 'A' can lead to poor engine performance, increased emissions, and potential damage to other components if not addressed promptly.

8. How long does it typically take to repair the OBDII code U059E in a Mercury associated with Invalid Data Received From NOX Sensor 'A'?

The repair time for the U059E code can vary depending on the exact cause of the issue and the availability of parts. It is recommended to consult a mechanic for a more accurate estimate.

9. What is the role of the NOx sensor 'A' in a Mercury, and why is it essential for proper vehicle operation?

The NOx sensor 'A' in a Mercury measures the levels of nitrogen oxide in the exhaust gases, helping the vehicle's ECU adjust fuel mixture and emission controls for optimal performance and reduced environmental impact.

10. How can regular maintenance help prevent the U059E code from appearing in a Mercury due to issues with the NOx sensor 'A'?

Regular maintenance, including timely sensor inspections and replacements as recommended by the manufacturer, can help prevent issues with the NOx sensor 'A' and reduce the likelihood of triggering the U059E code in your Mercury.

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