hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
85,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Hyundai Sonata exhaust system problems

exhaust system problem

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2003 Hyundai Sonata Owner Comments

problem #1

Feb 212011

Sonata 4-cyl

  • 85,000 miles


2003 Hyundai Sonata egr issues (check engine light 401)- I've been having persistent issues with my vehicle's egr system for over a year now. I have replaced the entire egr system including the egr valve, solenoid, etc. I have also had to replace other parts that have failed due to the malfunctioning egr - ignition coils, spark plugs. Even after replacing all these parts, my vehicle still complains about the egr with check engine light constantly on (401). I have also been getting very poor mileage. I contacted Hyundai about a tsb they sent out to dealers for egr diagnosis. Hyundai denied assistance with this issue and asked me to contact the dealership directly. The dealer wants to charge me a diagnostic fee to look into the issue + fees for parts. Searching on the internet, I found several cases of egr malfunctioning with 2003 models. Hyundai needs to look into this.

- Olathe, KS, USA

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