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2005 Kia Sedona P0510 Code: Closed Throttle Position Switch Issue - Fix & Diagnosis

Model: 2005 Sedona Fault Code: P0510 Posted: 2016-07-21 15:22

My 2005 Kia Sedona recently triggered a P0510 diagnostic code, indicating a closed throttle position switch fault. Last year, I replaced the throttle position sensor (TPS) to resolve a similar issue, and that temporarily fixed it. This year, the same P0510 code returned. After replacing the TPS again, the problem persists. The vehicle doesn't stall completely while driving, but when accelerating, it stutters and noticeably 'bogs down'—especially under light throttle input. I'm now unsure whether to replace the TPS again or investigate other potential causes. The P0510 code does not always indicate a failed sensor; in some cases, it may point to misalignment or improper installation rather than a faulty component. I've read that these sensors have significant mechanical play and must be properly aligned for correct operation. I'm looking for reliable troubleshooting steps—especially whether the issue could stem from TPS alignment instead of a hardware failure. Any insights on diagnosing this code specifically in 2005 Sedona models would be greatly appreciated.

Related fault codes
P0510
Comments (7)
Anonymous 2016-07-21 17:41

Verify that the throttle position switch (TPS) is functioning correctly. Refer to common causes and fixes for P0510 on this forum for detailed troubleshooting steps.

Anonymous 2016-07-26 17:23

I just got a P0510 code today—my car jumped during acceleration and lost power. After driving home, it ran fine. I'm planning to replace the TPS next, but I'm wondering if anyone else has found a resolution beyond replacement. Any updates would be helpful!

Anonymous 2016-07-26 17:40

I discovered my issue was actually a loose TPS that had come out of alignment. These sensors have considerable play and must be installed in a precise position to function properly. The P0510 code doesn't always mean the sensor is faulty—it may simply indicate misalignment. I recommend checking whether your TPS is securely mounted before replacing it.

Anonymous 2016-07-26 17:51

Thanks for the tip! My mechanic is now inspecting the vehicle more thoroughly and will check if there's a deeper issue than just a simple sensor replacement. I've heard that dealerships charge high fees—any advice on cost-effective solutions?

Anonymous 2016-07-26 18:15

I called my dealer and they quoted $60 to realign the TPS. I'm going with that option—it's a more affordable fix than full replacement.

Anonymous 2016-07-26 18:32

That sounds like a solid solution. But first, how did you determine it needed realignment? I've only had it scanned at my local shop and will have the mechanic inspect it closely this week. Any details on your diagnosis would be very helpful!

Anonymous 2016-07-28 07:21

Hi—could you please share how you concluded that TPS alignment was the issue? My van is currently being inspected at the shop, and I mentioned your post about misalignment to the technician. Any additional insights would be appreciated. Did you take it to the dealer and has the problem been resolved?