AutoCodes – Dodge – P2272 Dodge

P2272 Dodge Code - O2 Sensor Signal Biased/Stuck Lean Bank 2 Sensor 2

Quick Answer

The Powertrain Control Module (PCM) supplies a voltage of about 450 mV between the HO2S high and low signal circuits. Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen 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: P2272 Dodge indicates O2 Sensor Signal Biased/Stuck Lean Bank 2 Sensor 2.
Common causes: Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen 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.

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Code Popularity 4,742

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 P2272 Dodge Description

The Powertrain Control Module (PCM) supplies a voltage of about 450 mV between the HO2S high and low signal circuits. The oxygen sensor varies the voltage over a range from about 1,000 mV when the exhaust is rich, down through about 10 mV when the exhaust is lean.
The PCM monitors and stores the heated oxygen sensor (HO2S) voltage information. The PCM evaluates the HO2S voltage samples in order to determine the amount of time the HO2S voltage was out of range. The PCM compares the stored HO2S voltage samples taken within each sample period and determines if majority of the samples are out of the operating range.

OBDII Code P2272 Dodge - O2 Sensor Signal Biased/Stuck Lean Bank 2 Sensor 2 - AutoCodes.com — P2272 Dodge Code - O2 Sensor Signal Biased/Stuck Lean Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P2272 Dodge?

Faulty Rear Heated Oxygen Sensor Bank 2
Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Exhaust gas leaks

How to Fix the DTC P2272 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 P2272 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.

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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 P2272 Dodge Code

1. What does the OBDII code P2272 mean for a Dodge vehicle?

P2272 indicates that the oxygen sensor (O2 sensor) on Bank 2 Sensor 2 is detecting a consistently lean condition, meaning the air-fuel mixture has too much air and not enough fuel.

2. What are the common symptoms of the P2272 code?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, rough idling, poor acceleration, or the engine running lean.

3. What causes the P2272 code to appear on a Dodge vehicle?

Common causes include a faulty downstream O2 sensor (Bank 2 Sensor 2), exhaust leaks, damaged wiring or connectors, or issues with the vehicle's fuel system.

4. Which oxygen sensor is affected by the P2272 code?

The code refers to Bank 2 Sensor 2, which is the downstream O2 sensor located after the catalytic converter on the side of the engine opposite cylinder 1.

5. How can I diagnose the P2272 code in my Dodge?

Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, check for exhaust leaks near the sensor, and test the O2 sensor's voltage readings for irregularities.

6. Can a faulty catalytic converter cause the P2272 code?

Yes, a failing catalytic converter can cause the downstream O2 sensor to detect incorrect readings, potentially triggering this code.

7. Is it safe to drive with the P2272 code active?

Driving with this code is not recommended, as it can lead to poor engine performance, reduced fuel economy, and potential damage to the catalytic converter over time.

8. How do I fix the P2272 code on my Dodge?

Repairs may involve replacing the faulty O2 sensor, fixing exhaust leaks, repairing damaged wiring, or addressing fuel delivery issues that are causing the lean condition.

9. How much does it cost to repair the P2272 code?

The cost varies depending on the issue, but replacing an O2 sensor typically costs $100-$300, while repairing exhaust leaks or fuel system problems can cost more.

10. Can a dirty air filter cause the P2272 code?

A dirty air filter is unlikely to directly cause this code, but it can contribute to an improper air-fuel mixture, so it's worth inspecting and replacing if necessary.