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Engine-Codes – Generic – P2255

P2255 Code - O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1

Quick Answer

The diagnostic trouble code P2255 indicates an issue with the O2 sensor negative current control circuit on Bank 2 Sensor 1 in the vehicle's exhaust system. Common causes include Faulty O2 sensor, Wiring issues or shorts in the O2 sensor circuit, ECM software or hardware problems. 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 indicates O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1.
Common causes
Common causes include Faulty O2 sensor, Wiring issues or shorts in the O2 sensor circuit, ECM software or hardware problems.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P2255 Description

The diagnostic trouble code P2255 indicates an issue with the O2 sensor negative current control circuit on Bank 2 Sensor 1 in the vehicle's exhaust system. The O2 sensor, also known as the oxygen sensor, plays a crucial role in monitoring the oxygen levels in the exhaust gases to help the engine control module (ECM) adjust the air-fuel mixture for optimal combustion efficiency.

OBDII Code P2255 - O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
P2255 Code - O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1

Common Causes of P2255

  1. Faulty O2 sensor
  2. Wiring issues or shorts in the O2 sensor circuit
  3. ECM software or hardware problems
  4. Exhaust leaks near the O2 sensor
  5. Contaminated or damaged O2 sensor

Symptoms of P2255

  1. Check engine light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Engine misfires
  5. Increased emissions

How to Fix P2255

  1. Connect an OBD-II scanner to read and record the trouble code.
  2. Inspect the O2 sensor wiring and connector for any visible damage or corrosion.
  3. Test the O2 sensor's voltage output using a multimeter to determine if it is functioning correctly.
  4. Replace the O2 sensor if it is found to be faulty or damaged.
  5. Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2255

The cost of repairing a P2255 code can vary depending on the make and model of the vehicle, as well as the location and labor rates of the auto repair shop. On average, replacing an O2 sensor can cost between $100 to $300 for the part, with additional labor costs ranging from $100 to $200. It's advisable to contact local auto repair shops for more accurate pricing based on your specific vehicle and location.

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Code P2255 Information for Specific Makes

  • P2255 Acura — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 Dodge — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 Ford — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 Honda — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 Hyundai — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 KIA — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 Lexus — A/F Sensor Bank 2 Short Circuit
  • P2255 Lincoln — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 Mercury — O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 1
  • P2255 Scion — A/F Sensor Bank 2 Short Circuit
  • P2255 Toyota — A/F Sensor Bank 2 Short Circuit
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.

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