Code P0131, where is the O2 sensor located?

2014 FORD FLEX
114,000 MILES • 3.5L • V6 • TURBO • 4WD • AUTOMATIC
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GEOFF1024
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  • 2 POSTS
Hi I'm getting a p0131 code. Bank 1 sensor 1 i replaced the one in the front by the radiator but i believe it's the other sensor but having trouble finding it. There's not much online. Thank you
Nov 23, 2024 at 8:49 AM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,387 POSTS
P0131 is a Bank 1 Sensor 1 circuit code. Basically, says that the sensor is showing a grounded state. The sensor you replaced would have been the left or bank two sensor. The bank 1 sensor is on the firewall side in the top of the exhaust manifold. It gets torqued to 35 lb-ft.
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Nov 23, 2024 at 10:49 AM
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