AutoCodes – Lincoln – P2240 Lincoln

P2240 Lincoln Code - Oxygen Sensor Positive Current Control Circuit Open - Bank 2 Sensor 1

Quick Answer

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 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
P2240 Lincoln indicates Oxygen Sensor Positive Current Control Circuit Open - Bank 2 Sensor 1.
Common causes
Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 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 2,249
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2240 Lincoln Description

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.
OBDII Code P2240 Lincoln - Oxygen Sensor Positive Current Control Circuit Open - Bank 2 Sensor 1 - AutoCodes.com
P2240 Lincoln Code - Oxygen Sensor Positive Current Control Circuit Open - Bank 2 Sensor 1

What are the Possible Causes of the DTC P2240 Lincoln?

  • Faulty Front Heated Oxygen Sensor Bank 2
  • Front Heated Oxygen Sensor Bank 2 harness is open or shorted
  • Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection

How to Fix the DTC P2240 Lincoln?

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 P2240 Lincoln 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.

Need more information about the P2240 Lincoln code?

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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 Lincoln Code

What does the OBD-II code P2240 mean for a Lincoln vehicle?

P2240 indicates an issue with the Oxygen Sensor Positive Current Control Circuit for Bank 2 Sensor 1, often caused by an open circuit or faulty sensor.

What are the common symptoms of code P2240 in a Lincoln?

Symptoms may include poor fuel economy, rough engine performance, increased emissions, and the Check Engine Light turning on.

What causes the P2240 code to appear in Lincoln vehicles?

Possible causes include a damaged oxygen sensor, wiring issues, an open circuit, or a malfunctioning Engine Control Module (ECM).

How can I diagnose the P2240 code in my Lincoln?

Inspect the wiring and connectors for damage, test the Bank 2 Sensor 1 oxygen sensor, and check for voltage or current irregularities in the circuit.

Is it safe to drive with the P2240 code in a Lincoln?

Driving with this code may lead to reduced engine efficiency and higher emissions, but it's generally not an immediate safety concern. Prompt repairs are recommended.

How do I fix the P2240 code on a Lincoln?

Common fixes include replacing the Bank 2 Sensor 1 oxygen sensor, repairing damaged wiring, or addressing issues with the ECM.

How much does it cost to repair a P2240 code in a Lincoln?

Repair costs vary but may range from $150 to $400 for parts and labor, depending on whether the sensor or wiring needs replacement.

Can a bad oxygen sensor trigger the P2240 code in a Lincoln?

Yes, a faulty Bank 2 Sensor 1 oxygen sensor is one of the most common causes of the P2240 code.

How can I prevent the P2240 code from appearing in my Lincoln?

Regular maintenance, including inspecting oxygen sensors and wiring for damage, can help prevent this code from appearing.

What tools are needed to troubleshoot the P2240 code in a Lincoln?

A digital multimeter, an OBD-II scanner, and basic hand tools are typically required to diagnose and repair this code.

Discuss the causes and fixes for P2240 Lincoln OBDII Code

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