Invalid Data Received From EGR Control Module
The U0473 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From EGR Control Module. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $200 - $800 (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
- Check engine light on
- Rough idle
- Failed emissions test
- Engine surging at idle
- Increased NOx emissions
Probable Causes (Ranked by Likelihood)
- EGR valve position sensor bad data Very High
- EGR valve stuck with carbon buildup High
- CAN bus data error Moderate
- EGR cooler leaking Low
Step-by-Step Diagnostic Procedure
-
Clean EGR valve
-
Check EGR position sensor
-
Scan EGR module for codes
-
Inspect EGR cooler for leaks
Frequently Asked Questions
Can I drive with U0473?
Short distances. The vehicle may run rough and fail emissions.
What causes U0473?
Usually carbon buildup on the EGR valve causing it to stick.
How much to fix?
Typically $200 to $800. EGR cleaning is on the lower end.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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