Engine-Codes.com
Engine-Codes – Mercury – P2238 Mercury

P2238 Mercury Code - O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1

Quick Answer

The P2238 diagnostic trouble code (DTC) for Mercury vehicles specifically refers to an issue with the O2 sensor positive current control circuit being lower than normal for Bank 1 Sensor 1. Common causes include Faulty O2 sensor, Damaged wiring or connectors, Issues with the ECM. 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
P2238 Mercury indicates O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1.
Common causes
Common causes include Faulty O2 sensor, Damaged wiring or connectors, Issues with the ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2238 Mercury Description

The P2238 diagnostic trouble code (DTC) for Mercury vehicles specifically refers to an issue with the O2 sensor positive current control circuit being lower than normal for Bank 1 Sensor 1. The O2 sensor, also known as the oxygen sensor, plays a crucial role in monitoring the oxygen levels in the exhaust gases. This information is used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion efficiency.

OBDII Code P2238 Mercury - O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1
P2238 Mercury Code - O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1

Common Causes of P2238 Mercury

  1. Faulty O2 sensor
  2. Damaged wiring or connectors
  3. Issues with the ECM
  4. Exhaust leaks
  5. Contaminated fuel

Symptoms of P2238 Mercury

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Poor acceleration
  4. Increased emissions
  5. Check Engine Light illuminated

How to Fix P2238 Mercury

  1. Diagnose the issue using a scan tool to confirm the P2238 code and identify the specific cause.
  2. Inspect the O2 sensor, wiring, and connectors for any signs of damage or corrosion.
  3. Replace the O2 sensor if it is found to be faulty. Ensure to use an OEM or high-quality replacement part.
  4. Repair any damaged wiring or connectors as necessary.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2238 Mercury

The typical repair costs for addressing a P2238 code on a Mercury vehicle can range from $200 to $500, including parts and labor. However, the actual cost may vary depending on the specific make and model of the vehicle, the location of the repair shop, and the extent of the repairs needed. It is recommended to consult with a trusted mechanic or auto repair shop to get an accurate estimate based on the individual circumstances.

Need more information about the P2238 Mercury code?

Need more information on how to fix the P2238 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2238 Mercury code diagnosed by a professional: Find a repair shop in your area

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 P2238 Mercury Code

No Frequently Asked Questions about P2238 Mercury Code found.

Discuss the causes and fixes for P2238 Mercury OBDII Code

Submit a New Comment

Code P2238 Mercury comments

No comments found for this page.