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Code P1289 after replacing the valve cover gaskets

Tiny
FUZZBALL
  • MEMBER
  • 2008 FORD TAURUS
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Hi,

I changed the valve cover gaskets on my car listed above X SUV/Crossover due to oil leaks onto my exhaust. Upon completion I started the vehicle and I now get a P1289 that I never had before. I'm wondering if I may have, missed plugging a wire back in, but I cannot find a diagram of where the sensor is.

The car starts and runs, but it's rough due to the code.

How can I find that sensor to ensure it's plugged in?
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Sunday, December 22nd, 2019 AT 12:59 PM

6 Replies

Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
You usually get that code if your vehicle overheats. If the fault code came on the minute you started up your vehicle then I would recommend you double check your work and verify that you did not pinch a wire when you installed the valve cover back on. The sensor is located below the intake manifold so there is a good chance you may have pinched the harness?
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Sunday, December 22nd, 2019 AT 5:23 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

In the diagrams down below I have included a diagram with the Engine Temperature/Cylinder Head Temperature Sensor location for you. Please get back to us with what you find out and, if needed, we can go from there with a troubleshooting guide for Direct Trouble Code[DTC] P1289.

Thanks,
Alex
2CarPros
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Sunday, December 22nd, 2019 AT 5:39 PM
Tiny
FUZZBALL
  • MEMBER
  • 4 POSTS
Thank you JIS001 and SCGranTurismo, those were helpful. I'm going to check it out as soon as I can. Weird thing, I cleared the reading using my "Torque" app and everything works fine, the car drives and operates as normal, except that now I have no Temperature gauge, it stays on C. I haven't driven it much, but other than that, everything seems normal. I'll let y'all know what I find once I can check your diagrams.
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Monday, December 23rd, 2019 AT 12:08 PM
Tiny
FUZZBALL
  • MEMBER
  • 4 POSTS
Fixed! I found the unplugged wire once I started looking on the correct side of the engine!

Code clear and not resetting, temp guage working.
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Monday, December 23rd, 2019 AT 4:43 PM
Tiny
STEVE W.
  • MECHANIC
  • 12,977 POSTS
Good to hear you found it and repaired it. Thank you for using 2CarPros
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Wednesday, December 25th, 2019 AT 3:49 PM

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