DTC U2104 Cadillac

Left HO2S Sensor (Before TWC) Aging - Sensor Too Sluggish

Left HO2S Sensor (Before TWC) Aging - Sensor Too Sluggish

Description

Operational fault of left O2 sensor, before TWC. Sensor aging - O2 sensor too sluggish: response time too long or too short.

Cause and Solution

Left O2 sensor

Video Guide

Duration: PT3M54S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: U2104
  • Brand: Cadillac
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