P1130 — Toyota — Air/Fuel Sensor Circuit Range Performance Bank 1 Sensor 1

P1130 (Toyota): Air/Fuel Sensor Circuit Range Performance Bank 1 Sensor 1 — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Air/Fuel Sensor Circuit Range Performance Bank 1 Sensor 1. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain

Symptoms

  • Uneven idle.

Possible causes

  • Corroded A/F connector; intake leaks.

What to check

  • Inspect sensor wiring and intake sealing.