P2247 Acura Code - O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
Quick Answer
The P2247 diagnostic trouble code (DTC) for Acura vehicles indicates a problem with the O2 sensor reference voltage circuit on bank 2 sensor 1. Common causes include Damaged wiring or connectors, Faulty O2 sensor, Corrosion or contamination in the sensor. 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
- P2247 Acura indicates O2 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1.
- Common causes
- Common causes include Damaged wiring or connectors, Faulty O2 sensor, Corrosion or contamination in the sensor.
- 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 P2247 Acura Description
The P2247 diagnostic trouble code (DTC) for Acura vehicles indicates a problem with the O2 sensor reference voltage circuit on bank 2 sensor 1. The O2 sensor, also known as the oxygen sensor, plays a crucial role in monitoring the oxygen levels in the exhaust gases. This specific sensor is located before the catalytic converter and is responsible for sending signals to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.
Common Causes of P2247 Acura
- Damaged wiring or connectors
- Faulty O2 sensor
- Corrosion or contamination in the sensor
- ECM software or hardware issues
- Exhaust leaks near the sensor
Symptoms of P2247 Acura
- Decreased fuel efficiency
- Rough idling or stalling
- Check Engine Light illuminated
- Reduced engine power
- Increased emissions
How to Fix P2247 Acura
- Begin by performing a visual inspection of the wiring and connectors associated with the O2 sensor to check for any visible damage or corrosion.
- Use a multimeter to test the voltage output of the sensor and compare it to the manufacturer's specifications.
- If the sensor is faulty, replace it with a new, OEM-quality sensor.
- Clear the DTC and reset the ECM to see if the code reappears.
- Road test the vehicle to ensure that the issue has been resolved and that the O2 sensor is functioning properly.
Cost to Fix P2247 Acura
The typical repair costs for addressing the P2247 code on an Acura vehicle can vary depending on the specific model and year. In general, the cost of a new O2 sensor can range from $50 to $200, while labor costs can range from $100 to $200. Overall, the total repair cost for this issue may fall in the range of $150 to $400. It's important to note that diagnostic time and labor rates can vary based on location, so it's advisable to consult with a local auto repair shop for a more accurate estimate.
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Frequently Asked Questions about P2247 Acura Code
1. What does the OBDII code P2247 mean on an Acura?
P2247 indicates an "O2 Sensor Reference Voltage Circuit Open" for Bank 2 Sensor 1, meaning the reference voltage signal to the upstream oxygen sensor on Bank 2 is disrupted.
2. What are the symptoms of code P2247 in an Acura?
Symptoms may include poor fuel efficiency, rough idling, lack of engine power, an illuminated check engine light, and possibly failed emissions testing.
3. What causes the P2247 code to appear on an Acura?
Common causes include a damaged oxygen sensor, faulty wiring or connectors in the reference voltage circuit, a blown fuse, or a malfunctioning powertrain control module (PCM).
4. Which sensor is affected by code P2247 on an Acura?
The affected sensor is Bank 2 Sensor 1, which is the upstream oxygen sensor on the side of the engine opposite cylinder 1.
5. Can I drive my Acura with code P2247?
While the car may still run, driving with this code can lead to poor performance, increased emissions, and potential damage to the catalytic converter over time.
6. How do you diagnose the P2247 code on an Acura?
Diagnosis involves checking the oxygen sensor reference voltage with a multimeter, inspecting wiring and connectors for damage or corrosion, and testing the PCM if no other issues are found.
7. How do you fix code P2247 on an Acura?
Repairs may involve replacing the faulty oxygen sensor, repairing damaged wiring or connectors, replacing a blown fuse, or reprogramming or replacing the PCM if necessary.
8. How much does it cost to fix code P2247 on an Acura?
The cost varies depending on the issue, ranging from $150 to $400 for an oxygen sensor replacement or more if wiring or PCM repairs are needed.
9. What happens if the P2247 code is ignored on an Acura?
Ignoring the code can lead to reduced fuel efficiency, increased emissions, and potential long-term damage to the engine or catalytic converter.
10. Can a dirty oxygen sensor trigger code P2247 on an Acura?
A dirty or contaminated oxygen sensor is unlikely to cause this specific code, as P2247 refers to an open circuit in the reference voltage rather than sensor performance.
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