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rainer_tiger92

Veloster reduced engine power

I own a 2018 Hyundai Veloster with a gasoline engine. Recently, I've experienced reduced engine power and the check engine light is on. The vehicle has 79666 km on the odometer. Diagnostics point to a defective throttle valve, potentially the accelerator pedal module or related electronics. Has anyone encountered this?

Summary of the thread

A 2018 Hyundai Veloster owner experienced reduced engine power and a check engine light, with diagnostics indicating a possible defective throttle valve or related electronics. Another Veloster owner shared a similar experience, which was resolved by addressing a faulty throttle position sensor. Following this advice, the initial owner replaced the throttle valve assembly, successfully resolving the issue.

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4 comment(s)

lena_steel41

Whoa, sounds familiar! I drive a Veloster too, and I had similar symptoms a while back – the check engine light and a noticeable lag when accelerating. It felt like the car was struggling to get going. Have you noticed any change in fuel efficiency or any weird noises from the air intake? Might be worth checking those too.

rainer_tiger92 (community.author)

Thank you for your input. Fuel efficiency does seem slightly diminished, and I have observed a minor response delay upon acceleration. Did you eventually identify the root cause?

lena_steel41

Yep, for me it turned out to be a faulty throttle position sensor. Caused all sorts of havoc with the air/fuel mixture. Honestly, I tried a few things myself, but eventually had to bite the bullet and take it to a workshop. They sorted it out pretty quickly, but it's definitely something that can impact performance.

rainer_tiger92 (community.author)

Understood. I appreciate you sharing your experience. Based on your advice, I had the throttle valve assembly replaced. The total repair cost was 265€. The issue is now resolved. Thank you again.

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HYUNDAI

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VELOSTER