P2273 Dodge Code - Oxygen Sensor Signal Stuck Rich 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
- P2273 Dodge indicates Oxygen Sensor Signal Stuck Rich 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.
Code P2273 Dodge Description
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.
What are the Possible Causes of the DTC P2273 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 P2273 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 P2273 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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Frequently Asked Questions about P2273 Dodge Code
What does the OBDII code P2273 mean for a Dodge vehicle?
P2273 indicates that the downstream oxygen sensor (Bank 2, Sensor 2) is detecting a consistently rich air-fuel mixture.
What are the common symptoms of code P2273 on a Dodge?
Symptoms may include reduced fuel efficiency, rough engine performance, failed emissions tests, and the illumination of the check engine light.
What causes the P2273 code to be triggered?
Common causes include a faulty downstream oxygen sensor, exhaust leaks, a malfunctioning catalytic converter, or issues with fuel injectors or ignition components.
Which sensor is involved in the P2273 code?
The code pertains to Bank 2 Sensor 2, which is the downstream oxygen sensor located behind the catalytic converter on the side of the engine opposite Cylinder 1.
Can an exhaust leak cause the P2273 code on a Dodge?
Yes, an exhaust leak near the downstream sensor can disrupt readings and lead to a stuck rich signal.
How can the P2273 code affect engine performance?
The code can cause poor fuel economy, reduced engine efficiency, and potential damage to the catalytic converter over time.
Is it safe to drive with the P2273 code active on a Dodge?
While the vehicle may still be drivable, ignoring the code can lead to more severe damage, such as catalytic converter failure, and increased emissions.
How is the P2273 code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect the oxygen sensor and wiring, check for exhaust leaks, and analyze fuel system performance.
What repairs are typically needed to fix the P2273 code?
Repairs may include replacing the downstream oxygen sensor, fixing exhaust leaks, addressing fuel system problems, or replacing a damaged catalytic converter.
Can a dirty air filter cause a P2273 code on a Dodge?
While unlikely, a severely dirty air filter could impact air-fuel mixture and contribute to related issues, but it’s not a primary cause for this code.
Discuss the causes and fixes for P2273 Dodge OBDII Code
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