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Engine-Codes – Generic – P2242

P2242 Code - O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1

Quick Answer

The O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1 diagnostic trouble code (DTC) P2242 indicates that there is a high voltage condition in the positive current control circuit of the oxygen sensor located in bank 2, sensor 1. Common causes include Faulty Oxygen Sensor: The most common cause of this code is a malfunctioning oxygen sensor that is sending incorrect voltage signals to the ECM, Wiring Issues: Damaged or corroded wiring connecting the oxygen sensor to the ECM can cause high voltage readings, ECM Malfunction: A malfunctioning ECM can also cause high voltage readings from the oxygen sensor. 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
P2242 indicates O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1 .
Common causes
Common causes include Faulty Oxygen Sensor: The most common cause of this code is a malfunctioning oxygen sensor that is sending incorrect voltage signals to the ECM, Wiring Issues: Damaged or corroded wiring connecting the oxygen sensor to the ECM can cause high voltage readings, ECM Malfunction: A malfunctioning ECM can also cause high voltage readings from the oxygen sensor.
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 13, 2024
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Code P2242 Description

The O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1 diagnostic trouble code (DTC) P2242 indicates that there is a high voltage condition in the positive current control circuit of the oxygen sensor located in bank 2, sensor 1. This sensor is responsible for monitoring the oxygen content in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.

OBDII Code P2242 - O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1
P2242 Code - O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1

Common Causes of P2242

  1. Faulty Oxygen Sensor: The most common cause of this code is a malfunctioning oxygen sensor that is sending incorrect voltage signals to the ECM.
  2. Wiring Issues: Damaged or corroded wiring connecting the oxygen sensor to the ECM can cause high voltage readings.
  3. ECM Malfunction: A malfunctioning ECM can also cause high voltage readings from the oxygen sensor.
  4. Exhaust System Leaks: Leaks in the exhaust system can lead to false oxygen sensor readings, triggering this code.
  5. Fuel System Issues: Problems with the fuel system, such as a clogged fuel injector or fuel pressure regulator, can also cause this code to be triggered.

Symptoms of P2242

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Decreased Fuel Efficiency: A malfunctioning oxygen sensor can lead to incorrect air-fuel mixture adjustments, resulting in decreased fuel efficiency.
  3. Rough Idle: The engine may experience rough idling or hesitation when accelerating due to incorrect fuel mixture.
  4. Increased Emissions: A faulty oxygen sensor can cause the vehicle to produce higher emissions than normal, potentially leading to a failed emissions test.

How to Fix P2242

  1. Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the oxygen sensor, wiring, and ECM to identify the root cause of the high voltage readings.
  2. Replace Oxygen Sensor: If the oxygen sensor is found to be faulty, replace it with a new sensor that meets the manufacturer's specifications.
  3. Repair Wiring: Repair or replace any damaged or corroded wiring connecting the oxygen sensor to the ECM.
  4. Check ECM: Inspect the ECM for any signs of damage or malfunction, and replace if necessary.
  5. Clear DTC: After completing the repairs, clear the DTC from the ECM memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2242

The typical repair costs for addressing a P2242 code can vary depending on the specific cause of the issue. In general, the cost of a new oxygen sensor can range from $50 to $200, depending on the vehicle make and model. Labor costs for sensor replacement and diagnostic time can add an additional $100 to $300. Overall, the total repair cost for this issue could range from $150 to $500. It is important to note that labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.

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Code P2242 Information for Specific Makes

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.

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