EV Diagnostics
Source-backed diagnostic reference

P1132 EV diagnostic code

O2 Sensor Heater Control Circuit Bank 1 Sensor 1

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

  • BMW: O2 Sensor Heater Control Circuit Bank 1 Sensor 1 Source
  • BUICK: H02S Circuit Low Variance Bank 2 Sensor 1 Source
  • CADILLAC: H02S Circuit Low Variance Bank 2 Sensor 1 Source
  • CHEVY: H02S Circuit Low Variance Bank 2 Sensor 1 Source
  • CHRYSLER: H02S Circuit Low Variance Bank 2 Sensor 1 Source
  • FORD: Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1 Source
  • GM: H02S Circuit Low Variance Bank 2 Sensor 1 Source
  • GMC: H02S Circuit Low Variance Bank 2 Sensor 1 Source
  • LINCOLN: Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1 Source
  • MAZDA: HO2S Bank 1 Sensor 1 Signal Above 0.45v AF Ratio Too Rich Source
  • MERCURY: Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1 Source
  • OLDSMOBILE: HO2S Circuit Low Variance Bank 2 Sensor 1 Source
  • OTHER: Lack Of HO2S Switch - Sensor Indicates Rich Source
  • SATURN: H02S Circuit Low Variance Bank 2 Sensor 1 Source
  • VOLKSWAGEN: Oxygen Sensor Heating Circuit Bank 1 + 2 Sensor 1 Short To B+ Source

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