P1299 Code Repair

100,000 MILES • 5.4L • V8 • 2WD • AUTOMATIC
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DAVIDROSSAUTO
  • MEMBER
  • 15 POSTS
Thanks in advance for your time and input! Looking for Cylinder Head Temperature (CHT) Sensor location? Along with any input. Coolant is fine, engine is not overheating but a fan keeps kicking on. Check engine light turned on while driving and vehicle stalled. I did a reset code with OBD2 scanner and was able to get vehicle home. Initially started with heater blowing cold air, not getting hot. I will also be replacing the thermostat.
Feb 24, 2021 at 1:53 PM
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BMDOUBLE
  • ✓Experienced Mechanic
  • 1,139 POSTS
It sits in the valley of the engine under the intake manifold. The intake has to be removed. Most of the issues that I have had with this code has been mice escaping the winter cold and chewing the harness up. If that is the case, repair the wiring.
Feb 25, 2021 at 1:57 AM
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DAVIDROSSAUTO
  • MEMBER
  • 15 POSTS
Thanks much for your time and great info!
Feb 25, 2021 at 4:31 AM
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