Lost Communication With Vehicle Speed Limiter Module
The U0273 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Vehicle Speed Limiter Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $200 - $600 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Speed limiter not engaging
- Cannot set maximum speed limit
- Speed limiter warning light on
- Vehicle exceeding set speed limit
Probable Causes (Ranked by Likelihood)
- Failed speed limiter module Very High
- Cruise control system interference High
- CAN bus communication fault Moderate
- Software error in limiter Low
Step-by-Step Diagnostic Procedure
-
Scan speed limiter module for codes
-
Test cruise control system separately
-
Check CAN bus at limiter module
-
Update module software
Frequently Asked Questions
Can I drive with U0273?
Yes. Monitor your speed manually. The vehicle can still be driven normally.
What causes U0273?
Usually a failed speed limiter module or software error.
Who uses speed limiters?
Common in fleet and commercial vehicles for safety and insurance compliance.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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