EV Diagnostics
Source-backed diagnostic reference

P1177 EV diagnostic code

O2 Sensor Slow Response Bank 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 Slow Response Bank 2 Source
  • FORD: Synchronization Fault Source
  • JAGUAR: Long Term Fuel Trim Too Rich Banks 1 And 2 (FMFR) Source
  • LINCOLN: Synchronization Fault Source
  • MERCURY: Synchronization Fault Source
  • OTHER: Synchronization Fault Source
  • VOLKSWAGEN: Oxygen Sensor Correction Behind Catalyst Bank 1 Limit Attained Source

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