AutoCodes – Chrysler – U011A Chrysler

U011A Chrysler Code - Lost Communication With Exhaust Gas Sensor Module

Quick Answer

The Smart Oxygen Sensor Module (Smart O2 Module) is a smart device that receives information via the J1939 datalink from the Powertrain Control Module (PCM). Common causes include Faulty Exhaust Gas Sensor Module, Exhaust Gas Sensor Module harness is open or shorted, Exhaust Gas Sensor Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U011A Chrysler indicates Lost Communication With Exhaust Gas Sensor Module.
Common causes: Common causes include Faulty Exhaust Gas Sensor Module, Exhaust Gas Sensor Module harness is open or shorted, Exhaust Gas Sensor Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 989

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U011A Chrysler Description

The Smart Oxygen Sensor Module (Smart O2 Module) is a smart device that receives information via the J1939 datalink from the Powertrain Control Module (PCM). It provides the PCM with the oxygen concentration signal. It also performs its own diagnostics and reports failures back to the PCM over the J1939 datalink. The Diagnostic Trouble Code (DTC) sets when the PCM does not receive a message from the Smart O2 Module in a calibrated amount of time.

OBDII Code U011A Chrysler - Lost Communication With Exhaust Gas Sensor Module - AutoCodes.com — U011A Chrysler Code - Lost Communication With Exhaust Gas Sensor Module

What does this mean?

What are the Possible Causes of the DTC U011A Chrysler?

Faulty Exhaust Gas Sensor Module
Exhaust Gas Sensor Module harness is open or shorted
Exhaust Gas Sensor Module circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U011A Chrysler?

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 U011A Chrysler 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 U011A Chrysler Code

What does the OBDII code U011A mean for my Chrysler vehicle?

U011A indicates that there is a lost communication with the Exhaust Gas Sensor Module, meaning the engine control module (ECM) is unable to communicate with the exhaust gas sensor.

What are the common symptoms of the U011A code?

Common symptoms include the check engine light illuminating, reduced engine performance, increased emissions, and potentially poor fuel economy.

What could cause the U011A code to trigger?

Possible causes include a faulty exhaust gas sensor module, damaged wiring or connectors, a malfunctioning ECM, or issues with the vehicleâ€™s communication network.

How can I diagnose the U011A code?

To diagnose U011A, start by checking the vehicleâ€™s wiring and connectors for damage. Then use a scan tool to verify the code and check for additional codes that may indicate related issues.

What are some common repair tips for the U011A code?

Common repair tips include inspecting and repairing any damaged wiring or connectors, replacing the exhaust gas sensor module if it is faulty, and ensuring the ECM is functioning correctly.

Can the U011A code cause serious engine problems?

While U011A itself may not cause immediate serious engine problems, it can lead to increased emissions and reduced performance, which could become a concern if not addressed.

Is it safe to drive my vehicle with the U011A code?

Driving with the U011A code is not recommended, as it can result in poor engine performance and increased emissions, which may lead to further damage over time.

How much does it typically cost to fix the U011A code?

Repair costs can vary widely depending on the issue but may range from $100 to $600 or more, depending on whether you need wiring repairs, a new exhaust gas sensor module, or ECM replacement.

Will clearing the code U011A make the problem go away?

Clearing the code may turn off the check engine light temporarily, but it will not fix the underlying issue that caused the code to trigger, and the light is likely to come back on.