AutoCodes – Toyota – P2239 2008 Toyota Camry

P2239 2008 Toyota Camry Code - Oxygen A/F Sensor Pumping Current Circuit High Bank 1 Sensor 1

Quick Answer

The Air-Fuel ratio (A/F) sensor provides output voltage approximately equal to the existing air-fuel ratio. Common causes include Faulty EFI Relay, Faulty Air/Fuel Sensor Bank 1, Air/Fuel Sensor Bank 1 harness is open or shorted. 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: P2239 2008 Toyota Camry indicates Oxygen A/F Sensor Pumping Current Circuit High Bank 1 Sensor 1 .
Common causes: Common causes include Faulty EFI Relay, Faulty Air/Fuel Sensor Bank 1, Air/Fuel Sensor Bank 1 harness is open or shorted.
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 2,208

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 Oct 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2239 2008 Toyota Camry Description

The Air-Fuel ratio (A/F) sensor provides output voltage approximately equal to the existing air-fuel ratio.
The A/F sensor output voltage is used to provide feedback for the Engine Control Module (ECM) to control the air-fuel ratio.
With the A/F sensor output, the ECM can determine deviation from the stoichiometric air-fuel ratio and control proper injection time. If the A/F sensor is malfunctioning, the ECM is unable to accurately control air-fuel ratio.
The A/F sensor is equipped with a heater which heats the zirconia element. The heater is also controlled by the ECM. When the intake air volume is low (the temperature of the exhaust gas is low), current flows to the heater which heats the sensor to facilitate detection of accurate oxygen concentration.
The A/F sensor is a planar type. Compared to a conventional type, the sensor and heater portions are narrower. Because the heat of the heater is conducted through the alumina to zirconia (of the sensor portion), sensor activation is accelerated.

The code is output when there is an open or short in the A/F sensor circuit, or if A/F sensor output drops. To detect these problems, the voltage of the A/F sensor is monitored when turning the ignition switch to the ON position, and the admittance (admittance is an electrical term that indicates the ease of flow of current) is checked while driving. If the voltage of the A/F sensor is between 0.6 V and 4.5 V, it is considered normal. If the voltage is outside of the specified range, or the admittance is less than the standard value, the ECM will determine that there is a malfunction in the A/F sensor. If the same malfunction is detected in the next driving cycle, the MIL is illuminated and a DTC is set.

OBDII Code P2239 2008 Toyota Camry - Oxygen A/F Sensor Pumping Current Circuit High Bank 1 Sensor 1 - AutoCodes.com — P2239 2008 Toyota Camry Code - Oxygen A/F Sensor Pumping Current Circuit High Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P2239 2008 Toyota Camry?

Faulty EFI Relay
Faulty Air/Fuel Sensor Bank 1
Air/Fuel Sensor Bank 1 harness is open or shorted
Air/Fuel Sensor Bank 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2239 2008 Toyota Camry?

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 P2239 2008 Toyota Camry 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 P2239 2008 Toyota Camry code?

Need more information on how to fix the P2239 2008 Toyota Camry 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 P2239 2008 Toyota Camry Code

1. What are the common symptoms of OBDII code P2239 in a 2008 Toyota Camry?

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

2. What does the OBDII code P2239 indicate regarding the Oxygen A/F Sensor Pumping Current Circuit High Bank 1 Sensor 1 in a 2008 Toyota Camry?

- This code indicates that there is a high voltage condition in the oxygen sensor circuit located in Bank 1 Sensor 1 of the exhaust system.

3. What are the possible causes of OBDII code P2239 in a 2008 Toyota Camry?

- Potential causes include a faulty oxygen sensor, wiring issues in the sensor circuit, exhaust leaks, or a problem with the engine control module.

4. How can I diagnose and repair OBDII code P2239 in my 2008 Toyota Camry?

- Diagnosis typically involves checking the oxygen sensor's wiring and connections, testing the sensor's voltage output, and inspecting for exhaust leaks. Repair may involve replacing the oxygen sensor or addressing any wiring issues.

5. Can driving with OBDII code P2239 in a 2008 Toyota Camry cause further damage?

- While driving with this code may not cause immediate damage, it can lead to reduced fuel efficiency and potential long-term engine issues if left unresolved.

6. How much does it typically cost to repair OBDII code P2239 in a 2008 Toyota Camry?

- The cost of repairing this code can vary depending on the exact cause. Replacing the oxygen sensor can range from $200 to $400, while addressing wiring issues may require additional labor costs.

7. Can I reset the Check Engine Light after fixing OBDII code P2239 in my 2008 Toyota Camry?

- Yes, once the underlying issue causing the code has been resolved, you can reset the Check Engine Light using an OBDII scanner or by disconnecting the car's battery for a few minutes.

8. How often does the Oxygen A/F Sensor Pumping Current Circuit High Bank 1 Sensor 1 need to be replaced in a 2008 Toyota Camry?

- The oxygen sensor may need to be replaced every 60,000 to 90,000 miles as part of routine maintenance, but this can vary based on driving conditions and the sensor's lifespan.

9. Are there any preventive measures to avoid OBDII code P2239 in a 2008 Toyota Camry?

- Regularly servicing your vehicle, addressing any engine performance issues promptly, and ensuring proper maintenance of the oxygen sensor can help prevent this code from occurring.