P0130 · blink 21 – OXYGEN SENSOR CIRCUIT MALFUNCTION(BANK1 SENSOR1)
- System
- EFI 1NZ-FE/2NZ-FE
- Dashboard light
- Malfunction indicator lamp (Check Engine)
- Check-engine blink code
- 21
- Market note
- UNLEADED GASOLINE ONLY
- Applies to
- 2NZ-FE 1.3 (PK XLi/GLi NZE120) and 1NZ-FE 1.5 (JDM NZE121/NZE124 Corolla/Fielder/Runx)
- Description
- OXYGEN SENSOR CIRCUIT MALFUNCTION(BANK1 SENSOR1)
- Detection / symptoms
- Detection: Condition (a) and (b) continues for 60 secs. or more: (a) Voltage output of oxygen sensor remains at 0.35 V or more, or 0.55 V or less, during idling after engine is warmed up (b) Oxygen sensor output voltage amplitude is less than 0.3 V.
- Possible causes
- Oxygen sensor; Fuel trim malfunction
- What to check
- See RM page (inspection steps not parsed)
- Confidence
- high (official Toyota RM821E)
From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights