AutoCodes – RAM – U11F0 RAM

U11F0 RAM Code - Lost Communication With Left Impact Pressure Sensor

Quick Answer

The impact sensors perform their own self-test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC with periodic updates. Common causes include Faulty Left Impact Pressure Sensor, Left Impact Pressure Sensor harness is open or shorted, Left Impact Pressure Sensor 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: U11F0 RAM indicates Lost Communication With Left Impact Pressure Sensor.
Common causes: Common causes include Faulty Left Impact Pressure Sensor, Left Impact Pressure Sensor harness is open or shorted, Left Impact Pressure Sensor 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 640

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 May 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U11F0 RAM Description

The impact sensors perform their own self-test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC with periodic updates. The repair of this fault condition involves verifying the integrity of the wiring between the ORC and the sensor. A short to voltage fault on the door pressure sensor wiring can cause a loss of communication side-impact code to set and the possible replacement of a good side impact sensor. The door pressure sensor is hardwired to the side impact sensor which is hard-wired to the ORC creating a daisy chain circuit. The short to battery fault in a loss of communication or internal circuit failure of the door pressure sensor can cause the side impact sensor on the same side to set a loss of communication code. This code will set, if the ORC and the Driver Door Pressure Sensor do not establish and maintain valid data communications. The Diagnostic Trouble Code (DTC) will become Active after the fault has set for a minimum of 2.5 seconds. The DTC will go to Stored after the ORC to Driver Door Pressure Sensor communication fault has been removed or the suspect pressure sensor has been replaced for 2.5 seconds. The Multifunction Indicator Lamp (MIL) will set in the instrument cluster.

OBDII Code U11F0 RAM - Lost Communication With Left Impact Pressure Sensor - AutoCodes.com — U11F0 RAM Code - Lost Communication With Left Impact Pressure Sensor

What does this mean?

What are the Possible Causes of the DTC U11F0 RAM?

Faulty Left Impact Pressure Sensor
Left Impact Pressure Sensor harness is open or shorted
Left Impact Pressure Sensor circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC U11F0 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 U11F0 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.

Need more information about the U11F0 RAM code?

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 U11F0 RAM Code

1. What are the common symptoms of OBDII code U11F0 related to the left impact pressure sensor?

- Common symptoms include the airbag warning light illuminating on the dashboard, potential loss of communication with the left impact pressure sensor, and possible issues with the airbag system.

2. What are the possible causes of OBDII code U11F0 indicating lost communication with the left impact pressure sensor?

- The code U11F0 can be caused by issues such as a faulty impact pressure sensor, damaged wiring or connectors, a blown fuse, or a malfunction in the airbag control module.

3. How can I diagnose the reason behind OBDII code U11F0 indicating a communication problem with the left impact pressure sensor?

- To diagnose the issue, you may need to perform a thorough inspection of the impact pressure sensor, check the wiring and connections for any damage, test the sensor's functionality, and scan the airbag system for any related fault codes.

4. Is it safe to drive my vehicle with OBDII code U11F0 related to the left impact pressure sensor issue?

- It is not recommended to drive the vehicle with an unresolved airbag system fault, as it can compromise the safety of occupants in the event of a collision. It is advised to address the issue promptly.

5. Can I reset the OBDII code U11F0 indicating lost communication with the left impact pressure sensor myself?

- While you can clear the code with an OBDII scanner, it is essential to investigate and fix the underlying problem causing the code to appear. Simply clearing the code without addressing the root cause may lead to the issue recurring.

6. What are some repair tips for fixing OBDII code U11F0 associated with the left impact pressure sensor communication problem?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the left impact pressure sensor if faulty, ensuring the fuse related to the airbag system is intact, and resetting the code after the issue is resolved.

7. Do I need a professional mechanic to fix OBDII code U11F0 indicating a communication issue with the left impact pressure sensor?

- While some DIY enthusiasts may be able to address the issue themselves, it is recommended to consult a professional mechanic, especially when dealing with safety-critical components like the airbag system.

8. How much does it cost to repair OBDII code U11F0 related to the left impact pressure sensor issue?

- The cost of repair can vary depending on the exact cause of the problem. It may involve expenses for parts like the impact pressure sensor, labor costs for diagnosis and repair, and potentially additional components if the issue is more complex.

9. Are there any recalls or technical service bulletins related to OBDII code U11F0 and the left impact pressure sensor problem?

- It is advisable to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins addressing the specific issue related to the left impact pressure sensor and OBDII code U11F0.

10. Can a malfunctioning left impact pressure sensor causing OBDII code U11F0 affect the overall performance of the vehicle?

- While the primary concern with a malfunctioning impact pressure sensor is the potential compromise to the airbag system's functionality and safety, it generally does not impact the overall performance of the vehicle in terms of drivability or engine operation.