AutoCodes – Acura – P2248 Acura

P2248 Acura Code - O2 Sensor Reference Voltage Performance Bank 2 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 2, Front Oxygen Sensor Bank 2 harness is open or shorted, Front 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: P2248 Acura indicates O2 Sensor Reference Voltage Performance Bank 2 Sensor 1.
Common causes: Common causes include Faulty Front Oxygen Sensor Bank 2, Front Oxygen Sensor Bank 2 harness is open or shorted, Front 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 1,562

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 P2248 Acura 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 P2248 Acura - O2 Sensor Reference Voltage Performance Bank 2 Sensor 1 - AutoCodes.com — P2248 Acura Code - O2 Sensor Reference Voltage Performance Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P2248 Acura?

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

How to Fix the DTC P2248 Acura?

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 P2248 Acura 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 P2248 Acura Code

1. What does the OBDII code P2248 mean for an Acura?

P2248 indicates an issue with the O2 sensor reference voltage performance for Bank 2, Sensor 1. This typically means the sensor is not receiving or sending the correct reference voltage.

2. What are the common symptoms of P2248 in an Acura?

Common symptoms include a check engine light, decreased fuel efficiency, rough idling, poor engine performance, and possibly increased emissions.

3. What causes the P2248 code on an Acura?

Possible causes include a faulty oxygen sensor (Bank 2, Sensor 1), damaged wiring or connectors, a malfunctioning powertrain control module (PCM), or an exhaust leak near the sensor.

4. Which oxygen sensor is affected by the P2248 code?

The code affects the oxygen sensor on Bank 2, Sensor 1, which is the upstream sensor on the side of the engine opposite Cylinder 1.

5. How do you diagnose the P2248 code on an Acura?

Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the sensor and wiring, checking for exhaust leaks, and testing the sensor's reference voltage and signal output.

6. Can I drive my Acura with the P2248 code?

Driving with this code is not recommended, as it may result in poor performance, increased fuel consumption, and potential damage to the catalytic converter.

7. How do you fix the P2248 code on an Acura?

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

8. How much does it cost to fix the P2248 code on an Acura?

Repair costs vary but typically range from $200 to $500, depending on whether the oxygen sensor needs replacement or additional repairs are required.

9. Can a dirty air filter cause the P2248 code?

While unlikely, a severely clogged air filter can affect engine performance and sensor readings, so itâ€™s worth inspecting and replacing if necessary.

10. How can I prevent the P2248 code on my Acura?

Regular maintenance, including inspecting and replacing oxygen sensors as needed, checking for exhaust leaks, and keeping wiring in good condition, can help prevent this code.