DTC B1007 Hummer

HO2S Heater Resistance (Bank 2 Sensor 1)

HO2S Heater Resistance (Bank 2 Sensor 1)

Description

This DTC sets when the heater current requirements are too low or too high in the UO2SHTR21 circuit.

Cause and Solution

VPWR circuit openUO2SHTR21 circuit openUO2SHTR21 circuit shortDamaged universal HO2S21 heater
Diagnosis:
Inspect the connectors for signs of damage, water intrusion or corrosion.

Video Guide

Duration: PT3M53S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: B1007
  • Brand: Hummer
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