AutoCodes – Generic – U11F0

U11F0 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 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.

Save to My Repairs My Repairs

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

Code Popularity 1,091

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC U11F0?

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?

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 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 code?

Need more information on how to fix the U11F0 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U11F0 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U11F0 Chrysler — Lost Communication With Left Impact Pressure Sensor
U11F0 Dodge — Lost Communication With Left Impact Pressure Sensor
U11F0 Fiat — Lost Communication With Left Impact Pressure Sensor
U11F0 Jeep — Lost Communication With Left Impact Pressure Sensor
U11F0 RAM — Lost Communication With Left Impact Pressure Sensor

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 Code

1. What are the common symptoms of OBDII code U11F0 (Lost Communication With 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 impact on the vehicle's airbag system operation.

2. What are the possible causes of OBDII code U11F0?

- The code U11F0 can be triggered by a faulty left impact pressure sensor, damaged wiring or connectors related to the sensor, a blown fuse, or a communication error within the airbag system.

3. How can I diagnose the issue related to U11F0 code?

- To diagnose the issue, it is recommended to use a diagnostic scan tool to retrieve the specific trouble codes, check the wiring and connectors for any damage, test the left impact pressure sensor for functionality, and ensure the airbag system is properly communicating.

4. Is it safe to drive with OBDII code U11F0 present?

- It is not recommended to drive the vehicle with the U11F0 code present, as it indicates a potential issue with the airbag system, which is crucial for occupant safety in the event of a collision.

5. How can I repair OBDII code U11F0?

- Repairing the U11F0 code may involve replacing the faulty left impact pressure sensor, repairing or replacing damaged wiring or connectors, checking and replacing any blown fuses, and clearing the trouble codes with a diagnostic scan tool.

6. Can a DIY enthusiast fix OBDII code U11F0 at home?

- While some basic diagnosis and repairs can be done at home, dealing with airbag system components like the impact pressure sensor requires caution and specialized knowledge. It is recommended to consult a professional mechanic for proper diagnosis and repair.

7. Will resetting the trouble codes clear OBDII code U11F0?

- Resetting the trouble codes with a diagnostic scan tool may temporarily clear the U11F0 code, but if the underlying issue with the left impact pressure sensor or wiring persists, the code is likely to reappear.

8. How much does it typically cost to repair OBDII code U11F0?

- The cost of repairing the U11F0 code can vary depending on the root cause of the issue, the need for replacement parts, and labor costs. It is advisable to get a few quotes from reputable repair shops for an accurate estimate.

9. Can OBDII code U11F0 affect vehicle performance?

- OBDII code U11F0 is related to the airbag system and may not directly impact the vehicle's performance, but it can affect occupant safety in the event of a collision. It is crucial to address the issue promptly.

10. Is it necessary to have the U11F0 code repaired immediately?

- It is highly recommended to address the U11F0 code promptly to ensure the proper functioning of the airbag system and maintain occupant safety. Delaying repairs can put occupants at risk in the event of a collision.