U0154: Lost Communication With Restraints Occupant Classification System Module
What Does U0154 Mean?
U0154 is a diagnostic trouble code indicating: Lost Communication With Restraints Occupant Classification System Module. This code relates to the network communication system. It has been reported in NHTSA complaints across 1 different vehicle models.
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"Driving on the highway I lost braking power the brake vacuum pump ceased up and broke the bolt in the cam shaft that had to be drilled out and replaced then that caused more damage to the cam and bottom end of the motor for the motor to throw the following codes: p0365 p0369 p0012 p0299 b1215 p023"
— Ford Escape owner, 07/02/2021
Source: NHTSA Complaints Database
Most Reported Vehicles for U0154
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | FORD ESCAPE |
Frequently Asked Questions
What causes communication codes?
Can a bad battery cause network codes?
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Check battery voltage and ground connections; inspect CAN bus wiring
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.