AutoCodes – Mercury – P013B Mercury

P013B Mercury Code - Oxygen Sensor Slow Response Lean to Rich Bank 1 Sensor 2

Quick Answer

During a Deceleration Fuel Shut-Off (DFSO) event, the Powertrain Control Module (PCM) monitors the rear heated oxygen sensor (HO2S) signal to determine if the signal is stuck in range. Common causes include Faulty Heated Oxygen Bank 1 Sensor 2, Heated Oxygen Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Bank 1 Sensor 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: P013B Mercury indicates Oxygen Sensor Slow Response Lean to Rich Bank 1 Sensor 2.
Common causes: Common causes include Faulty Heated Oxygen Bank 1 Sensor 2, Heated Oxygen Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Bank 1 Sensor 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.

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Code Popularity 1,317

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 Apr 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P013B Mercury Description

During a Deceleration Fuel Shut-Off (DFSO) event, the Powertrain Control Module (PCM) monitors the rear heated oxygen sensor (HO2S) signal to determine if the signal is stuck in range. The PCM expects the signal to exceed a calibrated rich or lean value within a calibrated amount of time. If the signal voltage remains less than the rich value after a number of occurrences, the PCM intrusively controls the fuel system rich over increasing time periods in an attempt to force the signal to greater than the calibrated rich value. The test fails when, after three consecutive intrusive attempts, the signal cannot be forced greater than the calibrated rich value. Also, if the signal voltage remains greater than the lean value after a calibrated amount of time with the fuel injectors off, a counter is incremented. The test fails when after three consecutive occurrences the signal is not less than the calibrated lean value.

OBDII Code P013B Mercury - Oxygen Sensor Slow Response Lean to Rich Bank 1 Sensor 2 - AutoCodes.com — P013B Mercury Code - Oxygen Sensor Slow Response Lean to Rich Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P013B Mercury?

Faulty Heated Oxygen Bank 1 Sensor 2
Heated Oxygen Bank 1 Sensor 2 harness is open or shorted
Heated Oxygen Bank 1 Sensor 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Exhaust leaks before or near the Heated Oxygen Bank 1 Sensor 2

How to Fix the DTC P013B Mercury?

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 P013B Mercury 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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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 P013B Mercury Code

1. What are the common symptoms of OBDII code P013B in a Mercury vehicle?

- Common symptoms include decreased fuel efficiency, rough idling, engine misfires, and the illumination of the check engine light.

2. What does the OBDII code P013B indicate in a Mercury car?

- The code P013B indicates a slow response from the oxygen sensor located after the catalytic converter in Bank 1, Sensor 2, signaling a lean to rich air-fuel mixture transition.

3. What are the possible causes of the P013B trouble code in a Mercury?

- The code P013B can be triggered by a faulty oxygen sensor, a vacuum leak in the exhaust system, a clogged catalytic converter, or issues with the fuel system.

4. How can I diagnose the P013B code in my Mercury vehicle?

- Diagnosis involves using an OBDII scanner to read the code, inspecting the oxygen sensor wiring and connections, checking for exhaust leaks, and testing the functionality of the catalytic converter.

5. Can I continue driving my Mercury with the P013B trouble code?

- It is not recommended to continue driving with the P013B code as it can lead to further damage to the engine and emissions system. It is advisable to address the issue promptly.

6. How can I repair the P013B code in my Mercury car?

- Repairing the P013B code involves replacing the oxygen sensor in Bank 1, Sensor 2, fixing any exhaust leaks, cleaning or replacing the catalytic converter, and addressing any fuel system issues.

7. Are there any DIY tips for fixing the P013B code in a Mercury vehicle?

- While some basic automotive knowledge is required, DIY enthusiasts can attempt to replace the oxygen sensor themselves using the appropriate tools and following the manufacturer's guidelines.

8. How much does it typically cost to repair the P013B code in a Mercury?

- The cost of repairing the P013B code can vary depending on the underlying issue, but it may range from $100 to $500, including parts and labor.

9. Will resetting the check engine light resolve the P013B code in my Mercury?

- Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the P013B code. It is crucial to diagnose and repair the problem to prevent it from reoccurring.

10. How often should I have the oxygen sensors in my Mercury vehicle inspected to prevent the P013B code?

- It is recommended to have the oxygen sensors inspected during regular maintenance intervals or whenever you notice symptoms of poor engine performance to prevent codes like P013B from appearing.