Code p1400?

2003 FORD TAURUS
180,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BBB86
Car runs like it's only firing 2 cylinders, replaced Diff pressure sensor, still running poorly. Any suggestions?
Nov 14, 2024 at 11:41 AM
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STRAILER
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So, I would check the engine compression first to see if the engine is hurt or not, you could upload a short video of the engine cranking from under the hood so I can tell what going on. I would not worry about this code right now.

P1400 - Differential Pressure Feedback Electronic (DPFE) Sensor Circuit Low Voltage Detected

We need more information to help but this will be a good start. Please go over this guide and get back to me:

https://www.2carpros.com/articles/how-to-test-engine-compression

Let us know what you find.
Nov 14, 2024 at 12:02 PM
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