P2255 2007 Toyota Camry Code - Oxygen A/F Sensor Reference Ground Circuit Low Bank 2 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 Air/Fuel Sensor Bank 2, Air/Fuel Sensor Bank 2 harness is open or shorted, Air/Fuel 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
- P2255 2007 Toyota Camry indicates Oxygen A/F Sensor Reference Ground Circuit Low Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Air/Fuel Sensor Bank 2, Air/Fuel Sensor Bank 2 harness is open or shorted, Air/Fuel 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 P2255 2007 Toyota Camry Description
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.
What are the Possible Causes of the DTC P2255 2007 Toyota Camry?
- Faulty Air/Fuel Sensor Bank 2
- Air/Fuel Sensor Bank 2 harness is open or shorted
- Air/Fuel Sensor Bank 2 circuit poor electrical connection
- Air/Fuel Sensor Relay
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2255 2007 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 P2255 2007 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.
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Frequently Asked Questions about P2255 2007 Toyota Camry Code
1. What are the common symptoms of OBDII code P2255 on a 2007 Toyota Camry?
- Common symptoms include poor engine performance, decreased fuel efficiency, rough idling, and the illumination of the check engine light.
2. What does the OBDII code P2255 indicate on a 2007 Toyota Camry?
- The code P2255 indicates an issue with the Oxygen A/F Sensor Reference Ground Circuit Low for Bank 2 Sensor 1 in the vehicle.
3. What are the possible causes of OBDII code P2255 on a 2007 Toyota Camry?
- Possible causes include a faulty oxygen sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning engine control module (ECM), or a poor electrical connection.
4. How can I diagnose the Oxygen A/F Sensor Reference Ground Circuit Low issue on my 2007 Toyota Camry?
- Diagnostic steps may involve checking the oxygen sensor wiring, inspecting the sensor connectors for damage, testing the sensor output voltage, and scanning the ECM for related error codes.
5. Can I continue driving my 2007 Toyota Camry with the P2255 fault code?
- It is not recommended to continue driving with the P2255 fault code present, as it can lead to further damage to the vehicle and worsen fuel efficiency.
6. How can I repair the Oxygen A/F Sensor Reference Ground Circuit Low issue on my 2007 Toyota Camry?
- Repair options may include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, resetting the ECM, or seeking professional help for diagnosis and repair.
7. Will resetting the check engine light resolve the P2255 code on a 2007 Toyota Camry?
- Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing the Oxygen A/F Sensor Reference Ground Circuit Low problem.
8. How much does it cost to repair the Oxygen A/F Sensor Reference Ground Circuit Low issue on a 2007 Toyota Camry?
- The cost of repair can vary depending on the exact cause of the problem, but it may range from $150 to $500, including parts and labor.
9. Can a DIY enthusiast fix the P2255 code on a 2007 Toyota Camry?
- DIY enthusiasts with automotive repair experience and the necessary tools may be able to diagnose and repair the Oxygen A/F Sensor Reference Ground Circuit Low issue, but professional assistance is recommended for accurate diagnosis.
10. Is the P2255 code a common issue in 2007 Toyota Camry vehicles?
- While the P2255 code may not be extremely common, it can occur in 2007 Toyota Camry vehicles due to sensor wear, wiring issues, or ECM malfunctions.
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