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P2240 Dodge Code - O2 Sensor Positive Current Control Circuit Open Bank 2 Sensor 1

Quick Answer

The P2240 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the O2 sensor positive current control circuit in Bank 2 Sensor 1. Common causes include Faulty O2 sensor, Damaged wiring or connectors in the O2 sensor circuit, ECM software issues. 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
P2240 Dodge indicates O2 Sensor Positive Current Control Circuit Open Bank 2 Sensor 1.
Common causes
Common causes include Faulty O2 sensor, Damaged wiring or connectors in the O2 sensor circuit, ECM software issues.
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
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Code P2240 Dodge Description

The P2240 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the O2 sensor positive current control circuit in Bank 2 Sensor 1. This sensor is responsible for monitoring the oxygen content in the exhaust gases and sending signals to the engine control module (ECM) for optimal fuel mixture adjustments. When the positive current control circuit is open, it means that there is a break or interruption in the electrical circuit that prevents the sensor from functioning properly.

OBDII Code P2240 Dodge - O2 Sensor Positive Current Control Circuit Open Bank 2 Sensor 1
P2240 Dodge Code - O2 Sensor Positive Current Control Circuit Open Bank 2 Sensor 1

Common Causes of P2240 Dodge

  1. Faulty O2 sensor
  2. Damaged wiring or connectors in the O2 sensor circuit
  3. ECM software issues
  4. Exhaust leaks near the sensor
  5. Water or corrosion in the sensor connector

Symptoms of P2240 Dodge

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

How to Fix P2240 Dodge

  1. Use an OBD-II scanner to verify the P2240 code and identify the specific O2 sensor affected.
  2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
  3. Test the O2 sensor using a multimeter to check for proper voltage readings.
  4. If the sensor is faulty, replace it with a new one compatible with the vehicle's make and model.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P2240 Dodge

The typical repair costs for addressing the P2240 code can vary depending on the make and model of the vehicle, the location of the repair shop, and the cost of parts and labor. In general, replacing an O2 sensor can range from $100 to $300, while labor costs can add another $100 to $200. Overall, the total repair cost for this issue may fall between $200 and $500. It is recommended to consult with a local auto repair shop for a more accurate estimate based on specific circumstances.

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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 P2240 Dodge Code

1. What does the OBDII code P2240 mean on a Dodge vehicle?

P2240 indicates an open circuit in the O2 Sensor Positive Current Control for Bank 2 Sensor 1. This means the sensor is not functioning properly due to a wiring or component issue.

2. What are the common symptoms of the P2240 code on a Dodge?

Symptoms include poor fuel economy, rough idling, engine hesitation, and the check engine light turning on.

3. What causes the P2240 code to appear?

Common causes include damaged wiring or connectors, a faulty oxygen sensor, or issues with the engine control module (ECM).

4. Is it safe to drive a Dodge with the P2240 code?

While the vehicle might still be operable, driving with this code can lead to reduced fuel efficiency and potential engine damage if not addressed promptly.

5. How can I diagnose the P2240 code on my Dodge?

Start by inspecting the wiring and connectors for Bank 2 Sensor 1. Use a multimeter to test for continuity and check the O2 sensor's functionality with an OBDII scanner.

6. What repairs are typically needed for the P2240 code in a Dodge?

Repairs may involve replacing the Bank 2 Sensor 1 oxygen sensor, repairing damaged wiring or connectors, or updating/replacing the ECM if necessary.

7. Can a dirty or contaminated oxygen sensor cause the P2240 code?

Yes, contamination from oil, coolant, or exhaust residue can impair the sensor's functionality, leading to this code.

8. How much does it cost to fix the P2240 code on a Dodge?

The cost varies depending on the specific issue but typically ranges from $150 to $400 for parts and labor, with oxygen sensor replacement being the most common solution.

9. Can a P2240 code be caused by other engine problems?

Yes, issues such as exhaust leaks or a failing catalytic converter can affect the oxygen sensor’s readings and trigger this code.

10. How can I prevent the P2240 code from recurring?

Regular maintenance, including inspecting wiring and ensuring proper sensor installation, can help prevent this code from reappearing.

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