P1131 — Mazda: HO2S Bank 1 Sensor 1 Signal Below 0.45v AF Ratio Too Lean

Code breakdown

Manufacturer-specific meanings (Mazda)

• Fiat
  Commutazione sonda lambda destra a monte errata sensore indica miscela magra
• BuickCadillacChevroletChryslerGMGMCOldsmobileSaturn
  HO2S Circuit Low Variance Bank 1 Sensor 2
• FordLincolnMercury
  Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1
• Mazda
  HO2S Bank 1 Sensor 1 Signal Below 0.45v AF Ratio Too Lean
• Subaru
  Front Oxygen Sensor Circuit Malfunction Short Circuit
• Volkswagen
  Bank 2 Sensor 1 Resistance Too High

Related codes

• P1100 — Manufacturer-specific fault code
• P1100-fiat — Intermittenza circuito sensore misuratore massa aria
• P1100-ford — Mass Air Flow Sensor Intermittent
• P1100-lexus — BARO Sensor Circuit Malfunction
• P1100-lincoln — Mass Air Flow Sensor Intermittent
• P1100-mazda — Mass Air Flow Sensor Circuit Intermittent

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