U0105: Lost Communication With Fuel Injector Control Module
What Does U0105 Mean?
U0105 is a diagnostic trouble code indicating: Lost Communication With Fuel Injector Control Module. This code relates to the network communication system. It has been reported in NHTSA complaints across 1 different vehicle models.
U0105 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"STEERING FROZE UP WHILE LEAVING MY DRIVEWAY AND P/S LIGHT CAME ON. SHUT ENGINE OFF AND BACK ON, BUT DID NOT RESOLVE. I RECALL AT LEAST ONE OTHER TIME THAT STEERING LOCKED UP TEMPORARILY WHILE AT A STOP. TOOK TO DEALERSHIP FOR DIAGNOSTIC AS MANUAL RECOMMENDS. DIAGNOSTIC SHOWS DTCS U0105 AND U0121. "
— Toyota Rav4 owner, 01/30/2019
"HEARD ABNORMAL MECHANICAL RATTLE FROM THE FRONT END GOING OVER ROUGH STREETS IN SAN FRANCISCO. TOOK VEHICLE IN SUSPECTING SUSPENSION ISSUE TO CAPITOL TOYOTA OF SAN JOSE. DIAGNOSIS WAS STEERING RACK HAS A KNOWN PART ISSUE, INTERNAL TO ITS DESIGN, NOTHING THE DEALER COULD DO, AS FACTORY DID NOT ALLO"
— Toyota Rav4 owner, 05/25/2012
Source: NHTSA Complaints Database
Most Reported Vehicles for U0105
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | TOYOTA RAV4 |
U0105 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
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.