EV Diagnostics
Source-backed diagnostic reference

P1271 EV diagnostic code

Ambient Air Pressure Sensor Electrical

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: Ambient Air Pressure Sensor Electrical Source
  • BUICK: APP Sensor 1-2 Performance Source
  • CADILLAC: APP Sensor 1-2 Performance Source
  • CHEVY: APP Sensor 1-2 Performance Source
  • CHRYSLER: APP Sensor 1-2 Performance Source
  • FORD: Cylinder #1 High To Low Side Open Source
  • GM: APP Sensor 1 2 Performance Source
  • GMC: APP Sensor 1 2 Performance Source
  • LINCOLN: Cylinder 1 High To Low Side Open Source
  • MERCURY: Cylinder 1 High To Low Side Open Source
  • OLDSMOBILE: APP Sensor 1-2 Performance Source
  • OTHER: Cylinder #1 High To Low Side Open Source
  • SATURN: APP Sensor 1-2 Performance Source

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