AutoCodes – Ford – P2243 Ford

P2243 Ford Code - O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1

Quick Answer

The Front Heated Oxygen Sensor (or O2 sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated 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: P2243 Ford indicates O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1.
Common causes: Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated 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 15,118

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 Dec 28, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2243 Ford Description

The Front Heated Oxygen Sensor (or 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 Powertrain Control Module (PCM) monitors the universal heated oxygen sensor (HO2S) for a circuit concern. This Diagnostic Trouble Code (DTC) sets when the PCM detects a concern with the circuit used to determine the oxygen content in the exhaust gas.

OBDII Code P2243 Ford - O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1 - AutoCodes.com — P2243 Ford Code - O2 Sensor Reference Voltage Circuit Open Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P2243 Ford?

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

How to Fix the DTC P2243 Ford?

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 P2243 Ford 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 P2243 Ford code?

Need more information on how to fix the P2243 Ford code? Get Access to Factory Service Manuals

Need Help with the 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 P2243 Ford Code

1. What does the OBDII code P2243 for Ford indicate?

- The code P2243 indicates an issue with the O2 Sensor Reference Voltage Circuit Open for Bank 1 Sensor 1 in the vehicle's engine.

2. What are the common symptoms of OBDII code P2243 in a Ford vehicle?

- Common symptoms include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.

3. What are the possible causes of the O2 Sensor Reference Voltage Circuit Open error (P2243) in a Ford vehicle?

- The common causes include a faulty O2 sensor, damaged wiring or connectors in the circuit, a blown fuse, or issues with the engine control module.

4. How can I diagnose the O2 Sensor Reference Voltage Circuit Open issue (P2243) in my Ford vehicle?

- Diagnosing the problem involves inspecting the O2 sensor wiring and connectors, checking for any visible damage, and using a multimeter to test the voltage in the circuit.

5. Can I drive my Ford vehicle with the OBDII code P2243 illuminated?

- It is not recommended to drive the vehicle with the P2243 code illuminated, as it can lead to further damage to the engine and affect its performance.

6. How can I repair the O2 Sensor Reference Voltage Circuit Open error (P2243) in my Ford vehicle?

- Repairing the issue may involve replacing the faulty O2 sensor, repairing damaged wiring or connectors, checking and replacing any blown fuses, and resetting the engine control module.

7. Will resetting the Check Engine Light resolve the OBDII code P2243 in my Ford vehicle?

- Simply resetting the Check Engine Light may temporarily turn it off, but it will not fix the underlying issue causing the P2243 code. Proper diagnosis and repair are necessary.

8. Is it possible to prevent the O2 Sensor Reference Voltage Circuit Open error (P2243) in a Ford vehicle?

- Regular maintenance checks, timely replacement of O2 sensors, and ensuring the integrity of the wiring and connectors can help prevent the occurrence of the P2243 code.

9. Can a DIY enthusiast fix the O2 Sensor Reference Voltage Circuit Open issue (P2243) in a Ford vehicle?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the issue. However, it is recommended to seek professional help for accurate diagnosis and repair.

10. How much does it typically cost to repair the OBDII code P2243 in a Ford vehicle at a repair shop?

- The cost of repair can vary depending on the extent of the issue, the parts needed, and the labor rates of the repair shop. It is advisable to obtain quotes from different shops for an accurate estimate.