AutoCodes – Honda – P2252 2009 Honda Accord

P2252 2009 Honda Accord Code - Air/Fuel Ratio Sensor 1 Bank 1 Circuit Low Voltage

Quick Answer

The Air/Fuel ratio (A/F) sensor (sensor 1) is installed in the exhaust system and detects oxygen content in the exhaust gas. Common causes include Faulty Air/Fuel Ratio Sensor 1 Bank 1, Air/Fuel Ratio Sensor 1 Bank 1 harness is open or shorted, Air/Fuel Ratio Sensor 1 Bank 1 electrical circuit poor 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: P2252 2009 Honda Accord indicates Air/Fuel Ratio Sensor 1 Bank 1 Circuit Low Voltage.
Common causes: Common causes include Faulty Air/Fuel Ratio Sensor 1 Bank 1, Air/Fuel Ratio Sensor 1 Bank 1 harness is open or shorted, Air/Fuel Ratio Sensor 1 Bank 1 electrical circuit poor 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 2,593

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 P2252 2009 Honda Accord Description

The Air/Fuel ratio (A/F) sensor (sensor 1) is installed in the exhaust system and detects oxygen content in the exhaust gas. The A/F sensor transmits output voltage to the Powertrain Control Module (PCM). A heater for the sensor element is embedded in the A/F sensor (sensor 1). It heats the sensor to stabilize and speed the detection of oxygen content. The increase in current through the heater levels off as the voltage applied to the electrode reaches a certain range because the amount of oxygen that goes through the diffusion layer is limited. The current is proportional to oxygen content in the exhaust gas, so the air/fuel ratio is detected by the measurement of the current. The PCM compares a set target air/fuel ratio with the detected air/fuel ratio and controls the fuel injection duration. If the A/F sensor (sensor 1) voltage is low, the air/fuel ratio is lean, and the PCM uses A/F feedback control to issue a rich command. If the A/F sensor (sensor 1) voltage is high, the air/fuel ratio is rich, and the PCM uses A/F feedback control to issue a lean command. If the element is not activated or the PCM terminal voltage is a set value or less for a set time when power is drawn to the A/F sensor (sensor 1) heater, a malfunction is detected and a DTC is stored.

OBDII Code P2252 2009 Honda Accord - Air/Fuel Ratio Sensor 1 Bank 1 Circuit Low Voltage - AutoCodes.com — P2252 2009 Honda Accord Code - Air/Fuel Ratio Sensor 1 Bank 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2252 2009 Honda Accord?

Faulty Air/Fuel Ratio Sensor 1 Bank 1
Air/Fuel Ratio Sensor 1 Bank 1 harness is open or shorted
Air/Fuel Ratio Sensor 1 Bank 1 electrical circuit poor connection
Vacuum leak
Low fuel pressure

How to Fix the DTC P2252 2009 Honda Accord?

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 P2252 2009 Honda Accord 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 P2252 2009 Honda Accord code?

Need more information on how to fix the P2252 2009 Honda Accord code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2252 2009 Honda Accord code diagnosed by a professional: Find a repair shop in your area

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 P2252 2009 Honda Accord Code

1. What are the common symptoms of OBDII code P2252 on a 2009 Honda Accord?

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

2. What can cause the OBDII code P2252 to trigger on a 2009 Honda Accord?

- The most common cause of P2252 is a malfunctioning Air/Fuel Ratio Sensor 1 Bank 1, which can be due to wiring issues, sensor damage, or a faulty connector.

3. How serious is the OBDII code P2252 on a 2009 Honda Accord?

- While the vehicle may still be operable with this code, ignoring it can lead to decreased fuel efficiency and potential damage to the engine over time.

4. Can I continue driving my 2009 Honda Accord with OBDII code P2252?

- It is not recommended to drive the vehicle for an extended period with this code present, as it can cause further damage and negatively impact performance.

5. How can I diagnose the cause of OBDII code P2252 on my 2009 Honda Accord?

- A thorough diagnostic scan using an OBDII scanner is recommended to pinpoint the exact cause, along with visual inspection of the sensor, wiring, and connectors.

6. What are some repair tips for fixing OBDII code P2252 on a 2009 Honda Accord?

- Repair tips include checking and repairing any damaged wiring, replacing the Air/Fuel Ratio Sensor 1 Bank 1 if faulty, and ensuring all connections are secure.

7. Is it possible to reset OBDII code P2252 on a 2009 Honda Accord without fixing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, the underlying issue causing P2252 will persist and likely trigger the code again.

8. How much does it typically cost to repair OBDII code P2252 on a 2009 Honda Accord?

- The cost can vary depending on the exact cause of the code, but expect to pay for the replacement of the Air/Fuel Ratio Sensor 1 Bank 1 and any necessary repairs to wiring or connectors.

9. Can a DIY enthusiast fix OBDII code P2252 on a 2009 Honda Accord?

- Yes, some experienced DIY enthusiasts may be able to replace the Air/Fuel Ratio Sensor 1 Bank 1 and perform necessary wiring repairs, but professional help is recommended for accurate diagnosis.

10. How long does it take to repair OBDII code P2252 on a 2009 Honda Accord?

- The repair time can vary depending on the extent of the issue, but a skilled mechanic can typically resolve the problem within a couple of hours to half a day.