AutoCodes – Dodge – P2239 Dodge

P2239 Dodge Code - O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1

Quick Answer

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 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: P2239 Dodge indicates O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1.
Common causes: Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 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.

Save to My Repairs My Repairs

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

Code Popularity 3,352

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 P2239 Dodge Description

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

OBDII Code P2239 Dodge - O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1 - AutoCodes.com — P2239 Dodge Code - O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P2239 Dodge?

Faulty Front Heated Oxygen Sensor Bank 1
Front Heated Oxygen Sensor Bank 1 harness is open or shorted
Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection

How to Fix the DTC P2239 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 P2239 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 P2239 Dodge code?

Need more information on how to fix the P2239 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2239 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 P2239 Dodge Code

What does the OBDII code P2239 mean for a Dodge vehicle?

P2239 indicates an issue with the O2 sensor positive current control circuit for Bank 1 Sensor 1. It means the current in the circuit is too high, which can affect the air-fuel mixture monitoring.

What are the common symptoms of P2239 in a Dodge?

Symptoms may include the check engine light turning on, poor fuel efficiency, rough idling, hesitation during acceleration, and increased emissions.

What causes the P2239 code to appear on a Dodge?

Common causes include a faulty Bank 1 Sensor 1 oxygen sensor, damaged or corroded wiring, a malfunctioning powertrain control module (PCM), or an exhaust leak near the sensor.

How can I diagnose the P2239 code on my Dodge?

Use an OBDII scanner to confirm the code, inspect the Bank 1 Sensor 1 wiring for damage or corrosion, check the oxygen sensor's functionality, and test the circuit for proper voltage and current flow.

Can I drive my Dodge with the P2239 code?

Driving with this code is not recommended as it can lead to poor performance, increased emissions, and potential damage to the catalytic converter if left unresolved.

How do I fix the P2239 code on a Dodge?

Repairs may include replacing the Bank 1 Sensor 1 oxygen sensor, repairing or replacing damaged wiring, checking for and fixing exhaust leaks, or reprogramming the PCM if needed.

How much does it cost to fix the P2239 code on a Dodge?

The cost varies depending on the issue. Replacing an oxygen sensor typically costs $150-$300, while wiring repairs or PCM reprogramming can add to the expense.

Can a bad PCM cause the P2239 code on a Dodge?

Yes, though it's less common, a malfunctioning PCM can cause this code by failing to properly regulate the oxygen sensor's current control circuit.

How can I prevent the P2239 code from reoccurring in my Dodge?

Regular maintenance, ensuring proper exhaust system function, and promptly addressing wiring or sensor issues can help prevent the code from reoccurring.

Is P2239 specific to Dodge vehicles?

No, P2239 is a generic OBDII code and can appear on other vehicles, but the diagnostic and repair process may differ between makes and models.