EV Diagnostics
Source-backed diagnostic reference

P1186 EV diagnostic code

O2 Sensor Heater Control Circuit Bank 1 Sensor 2

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 2 Source
  • BUICK: EOT Circuit Performance Source
  • CADILLAC: EOT Circuit Performance Source
  • CHEVY: EOT Circuit Performance Source
  • CHRYSLER: EOT Circuit Performance Source
  • FORD: FTS Low Fuel Pump Temperature Sensor Low Source
  • GM: EOT Circuit Performance Source
  • GMC: EOT Circuit Performance Source
  • JAGUAR: O2 Sensor Heater Circuit Shorted, Hardware Fault Source
  • LINCOLN: FTS Low Fuel Pump Temperature Sensor Low Source
  • MERCURY: FTS Low Fuel Pump Temperature Sensor Low Source
  • OLDSMOBILE: EOT Circuit Performance Source
  • OTHER: FTS Low - Fuel Pump Temperature Sensor Low Source
  • SATURN: EOT Circuit Performance Source
  • VOLKSWAGEN: Linear Oxygen Sensor Common Ground Short To B+ Source

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