AutoCodes – Mercury – P2244 Mercury

P2244 Mercury Code - O2 Sensor Reference Voltage Performance Bank 1 Sensor 1

Quick Answer

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Oxygen Sensor Bank 1, Front Oxygen Sensor Bank 1 harness is open or shorted, Front Oxygen Sensor Bank 1 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: P2244 Mercury indicates O2 Sensor Reference Voltage Performance Bank 1 Sensor 1.
Common causes: Common causes include Faulty Front Oxygen Sensor Bank 1, Front Oxygen Sensor Bank 1 harness is open or shorted, Front Oxygen Sensor Bank 1 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 1,212

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2244 Mercury 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 P2244 Mercury - O2 Sensor Reference Voltage Performance Bank 1 Sensor 1 - AutoCodes.com — P2244 Mercury Code - O2 Sensor Reference Voltage Performance Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P2244 Mercury?

Faulty Front Oxygen Sensor Bank 1
Front Oxygen Sensor Bank 1 harness is open or shorted
Front Oxygen Sensor Bank 1 circuit poor electrical connection

How to Fix the DTC P2244 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 P2244 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 P2244 Mercury Code

What does the OBDII code P2244 mean for a Mercury vehicle?

P2244 indicates an issue with the oxygen sensor reference voltage performance for Bank 1 Sensor 1. This suggests a problem with the electrical circuit or the sensor itself.

What are the common symptoms of the P2244 code?

Common symptoms include poor fuel efficiency, rough idling, engine hesitation, and the illumination of the check engine light.

What causes the P2244 code to appear?

The code can be triggered by a faulty oxygen sensor, damaged wiring or connectors, a malfunctioning PCM (Powertrain Control Module), or an issue with the sensor’s reference voltage.

Which oxygen sensor is affected by the P2244 code?

The code refers to the upstream oxygen sensor on Bank 1, which is the sensor located before the catalytic converter on the side of the engine with cylinder 1.

Can I continue driving with the P2244 code?

Driving with the P2244 code is not recommended, as it can lead to poor engine performance, reduced fuel efficiency, and potential damage to the catalytic converter.

How do I diagnose the P2244 code?

Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check the reference voltage and test the oxygen sensor’s functionality.

How do I fix the P2244 code on a Mercury?

Repairs may include replacing the affected oxygen sensor, repairing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.

Can a dirty air filter cause the P2244 code?

While a dirty air filter can affect engine performance, it is unlikely to directly cause the P2244 code, which is specific to the oxygen sensor's reference voltage.

Is it expensive to fix the P2244 code?

The repair cost depends on the exact cause. Replacing an oxygen sensor is relatively inexpensive, while PCM replacement or extensive wiring repairs may cost more.

Does the P2244 code reset automatically after repairs?

In some cases, the code may clear on its own after the issue is resolved. If not, you can use an OBDII scanner to reset it or disconnect the battery for a short time.