AutoCodes – Dodge – P2277 Dodge

P2277 Dodge Code - O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 3

Quick Answer

The downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the Powertrain Control Module (PCM). Common causes include Faulty O2 Sensor Bank 2 Sensor 3, Exhaust leaks, O2 Sensor Bank 2 Sensor 3 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: P2277 Dodge indicates O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 3.
Common causes: Common causes include Faulty O2 Sensor Bank 2 Sensor 3, Exhaust leaks, O2 Sensor Bank 2 Sensor 3 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,898

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2277 Dodge Description

The downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the Powertrain Control Module (PCM). The test fails if the PCM does not detect the output of the HO2S in a calibrated amount of time.

OBDII Code P2277 Dodge - O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 3 - AutoCodes.com — P2277 Dodge Code - O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 3

What does this mean?

What are the Possible Causes of the DTC P2277 Dodge?

Faulty O2 Sensor Bank 2 Sensor 3
Exhaust leaks
O2 Sensor Bank 2 Sensor 3 harness is open or shorted
O2 Sensor Bank 2 Sensor 3 circuit poor electrical connection

How to Fix the DTC P2277 Dodge?

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 P2277 Dodge 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 P2277 Dodge code?

Need more information on how to fix the P2277 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2277 Dodge 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 P2277 Dodge Code

1. What are the common symptoms of OBDII code P2277 in a Dodge vehicle?

The common symptoms of code P2277 include poor fuel economy, rough idling, and a noticeable decrease in engine performance.

2. What are the possible causes of OBDII code P2277 in a Dodge vehicle?

The possible causes of code P2277 include a faulty oxygen sensor, a vacuum leak, a damaged exhaust system, or issues with the fuel injection system.

3. How can I diagnose OBDII code P2277 in my Dodge vehicle?

Diagnosing code P2277 involves using an OBDII scanner to retrieve the fault code, inspecting the oxygen sensor, checking for vacuum leaks, and conducting a thorough inspection of the exhaust system.

4. Is it safe to continue driving with OBDII code P2277 in my Dodge vehicle?

It is not recommended to continue driving with code P2277 present, as it can lead to further damage to the engine and negatively impact fuel efficiency.

5. How can I repair OBDII code P2277 in my Dodge vehicle?

Repairing code P2277 may involve replacing the faulty oxygen sensor, addressing any vacuum leaks, repairing or replacing damaged components in the exhaust system, and ensuring proper functioning of the fuel injection system.

6. Can a DIY enthusiast fix OBDII code P2277 in a Dodge vehicle?

While some aspects of diagnosing and repairing code P2277 can be done by a DIY enthusiast, it is recommended to seek professional help to ensure the issue is properly diagnosed and repaired.

7. How much does it cost to repair OBDII code P2277 in a Dodge vehicle?

The cost of repairing code P2277 can vary depending on the specific cause of the issue, the parts needed for replacement, and the labor rates of the repair shop. It is advisable to obtain a few quotes from different mechanics.

8. How long does it take to repair OBDII code P2277 in a Dodge vehicle?

The time it takes to repair code P2277 can vary based on the extent of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

9. Can OBDII code P2277 cause damage to other engine components in a Dodge vehicle?

If left unaddressed, code P2277 can potentially cause damage to other engine components, reduce engine performance, and lead to higher fuel consumption.

10. What should I do if OBDII code P2277 keeps coming back in my Dodge vehicle after repairs?

If code P2277 keeps reoccurring after repairs, it is important to perform a thorough re-inspection of the oxygen sensor, exhaust system, and other relevant components to ensure the root cause of the issue is properly addressed.