AutoCodes – RAM – U011A RAM

U011A RAM 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 RAM 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 6,112

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

What does this mean?

What are the Possible Causes of the DTC U011A RAM?

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 RAM?

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 RAM 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 RAM Code

1. What are the common symptoms of OBDII code U011A RAM (Lost Communication With Exhaust Gas Sensor Module)?

- Common symptoms include the Check Engine Light coming on, decreased fuel efficiency, and potential issues with the vehicle's emissions system.

2. What are some possible causes of OBDII code U011A RAM?

- Potential causes include a faulty exhaust gas sensor module, damaged wiring or connectors in the communication network, or issues with the vehicle's powertrain control module.

3. How can I diagnose the cause of OBDII code U011A RAM?

- A thorough diagnostic scan using an OBDII scanner can help pinpoint the issue by identifying which modules are not communicating properly. Checking for loose connections or damaged wiring is also recommended.

4. What are the repair options for OBDII code U011A RAM?

- Repair options may include replacing the exhaust gas sensor module, repairing damaged wiring or connectors, or reprogramming the powertrain control module if necessary.

5. Can driving with OBDII code U011A RAM cause further damage to the vehicle?

- Driving with this code may lead to decreased fuel efficiency and potential issues with the vehicle's emissions system. It's best to address the problem promptly to prevent further damage.

6. How serious is OBDII code U011A RAM?

- While this code may not cause immediate drivability issues, it is important to address it to ensure proper functioning of the vehicle's emissions system and overall performance.

7. Can I reset the Check Engine Light caused by OBDII code U011A RAM?

- Resetting the Check Engine Light may temporarily turn it off, but the underlying issue causing the code will still need to be diagnosed and repaired to prevent the light from coming back on.

8. Is it safe to continue driving my vehicle with OBDII code U011A RAM?

- It is generally safe to drive the vehicle with this code, but it's recommended to address the issue promptly to prevent potential issues with emissions and fuel efficiency.

9. How much does it typically cost to repair OBDII code U011A RAM?

- The cost of repairs can vary depending on the exact cause of the code and the necessary repairs. It's best to consult a mechanic for a proper diagnosis and cost estimate.

10. Can I fix OBDII code U011A RAM myself, or do I need a professional mechanic?

- While some basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, diagnosing and repairing the underlying issue may require professional help from a mechanic with the right tools and expertise.