EV Diagnostics
Source-backed diagnostic reference

P1152 EV diagnostic code

O2 Sensor Heater Circuit Low Voltage Bank 2 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 Circuit Low Voltage Bank 2 Sensor 1 Source
  • FORD: Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2 Source
  • LINCOLN: Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2 Source
  • MAZDA: HO2S Bank 2 Sensor 1 Signal Above 0.45v AF Ratio Too Rich Source
  • MERCURY: Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2 Source
  • OTHER: Lack Of HO2S21 Switch - Sensor Indicates Rich Source
  • VOLKSWAGEN: Bank 1 Long Term Fuel Trim Range 2 Lower Lean Limit Exceeded Source

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