U0D00 trouble code?

Tiny
KARENSANTAFE
  • 2001 HYUNDAI SANTA FE
  • 19,000 MILES

Hi, I'm really hoping you can help. Last week my 2001 Hyundai Santa Fe started to shake while driving. When I stop at a light it feels like it's going to stall but doesn't. My check engine light came on as soon as the shaking started. I took it to have the trouble code read and it came back with a 4th cylinder misfiring code, so I had the 4th cyl spark plug changed, as well as the coil pack. The light came back on almost immediately and it's still misbehaving. Tonight I had the code read again - once again the 4th cyl misfiring, and also U0D00 came up. I can't find any info on this and hope you can help! Some more info - antifreeze in the reservoir is "disappearing". Last month I got a new radiator and hoses so I don't suspect a leak anywhere. Also I'm completely broke and can't afford a major repair or a new car, so really hoping this is a simple fix! Thanks in advance!

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Tuesday, October 9th, 2012 AT 1:46 AM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
  • 25,554 POSTS

It sounds like your missfire is coming from a internal coolant leak.

You will need to have a leak down test to verify the head gasket.

Roy

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Tuesday, October 9th, 2012 AT 1:54 AM
Tiny
KARENSANTAFE
  • MEMBER

I was really hoping not to hear the words "head gasket" in your response :( Thank you for taking the time to get back to me!

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Tuesday, October 9th, 2012 AT 2:08 AM
Tiny
SATURNTECH9
  • EXPERT
  • 30,281 POSTS

You can also do a chemical block tester they rent them at auto zone.

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Wednesday, October 10th, 2012 AT 3:08 AM

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