P0133 O2 Slow Response (reversed O2 connectors) - Hyundai

Описание: In most cases, a slow response DTC gets fixed with oxygen sensor replacement. What do you do when multiple sensors won’t fix it? Even though the root problem on this Hyundai was human error, the tests and methods I’m showing are still applicable to any vehicle using ‘normal’ zirconia O2 sensors.

Engine Performance Diagnostics chapter 5

Symptoms
check engine light (P0133)

Fix
corrected the swapped O2 sensor connectors

Tests shown
how to use scan data to evaluate O2 sensor performance, frequency and amplitude
how to use scan data/trouble codes while unplugging O2 sensors to identify sensor location
understanding how trouble codes can force an open loop condition
how to identify closed loop operation based on upstream O2 signal and STFT
identifying O2 sensor wires based on sensor-side wire colors
causes of an O2 slow response trouble code

Tools used
scan tool

Playlist
(Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing
   • (Chapters 4 and 5) Fuel Trim and Oxygen Se...  

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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
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