P2249 Acura Code - O2 Sensor Reference Voltage Circuit Low 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
- P2249 Acura indicates O2 Sensor Reference Voltage Circuit Low 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.
Code P2249 Acura Description
What are the Possible Causes of the DTC P2249 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 P2249 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 P2249 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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Frequently Asked Questions about P2249 Acura Code
What does the OBDII code P2249 mean on an Acura?
P2249 indicates an issue with the O2 sensor reference voltage circuit being low for Bank 2 Sensor 1, typically caused by a voltage drop or electrical issue.
What are the common symptoms of code P2249 in an Acura?
Symptoms may include poor fuel efficiency, reduced engine performance, rough idling, and the Check Engine Light turning on.
What causes the P2249 code to appear on an Acura?
Common causes include a faulty O2 sensor, damaged wiring or connectors, a malfunctioning ECM, or a short circuit in the reference voltage circuit.
Can I drive my Acura with a P2249 code?
While the vehicle may still be drivable, continuing to drive with this code can lead to reduced engine performance and potential damage to the catalytic converter.
How do I diagnose the P2249 code on my Acura?
Diagnosis involves inspecting the O2 sensor wiring and connectors, checking the reference voltage with a multimeter, and testing the sensor itself for proper functionality.
What repairs can fix the P2249 code on an Acura?
Repairs may include replacing the faulty O2 sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
How much does it cost to fix an Acura with a P2249 code?
The repair cost varies, but replacing an O2 sensor typically costs $150-$400, while wiring repairs or ECM replacements can be more expensive.
Can a dirty air filter cause the P2249 code?
A dirty air filter is unlikely to cause this specific code, as it directly relates to the O2 sensor reference voltage circuit and not airflow.
How can I prevent the P2249 code from happening again?
Regular maintenance, including inspecting wiring for damage and replacing O2 sensors as needed, can help prevent this issue from recurring.
Does a P2249 code always mean the O2 sensor is bad?
No, the code could also be caused by wiring issues, a faulty ECM, or a voltage problem in the circuit, so thorough diagnosis is important.
Discuss the causes and fixes for P2249 Acura OBDII Code
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