P0136 · blink 27 – OXYGEN SENSOR CIRCUIT MALFUNCTION(BANK1 SENSOR2)
- System
- EFI 3ZZ-FE
- Dashboard light
- Malfunction indicator lamp (Check Engine)
- Check-engine blink code
- 27
- Applies to
- 3ZZ-FE 1.6 (PK SE Saloon 1.6 2002-05 ZZE121)
- Description
- OXYGEN SENSOR CIRCUIT MALFUNCTION(BANK1 SENSOR2)
- Detection / symptoms
- Detection: Condition (a) and (b) continues for 60 secs. or more: (c) 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 (d) Oxygen sensor output voltage amplitude is less than 0.3 V.
- Possible causes
- Oxygen sensor; Fuel trim malfunction
- What to check
- Workshop check order (RM821E): READ OUTPUT DTC CODES -> READ VALUE OF O2S B1,S1 -> CHECK HARNESS AND CONNECTOR(ENGINE ECU−OXYGEN SENSOR) -> CHECK WHETHER MISFIRE IS OCCURRED OR NOT BY MONITORING DTC AND -> CHECK EMISSION CONTROL SYSTEM -> CHECK FUEL PRESSURE -> CHECK FUEL INJECTOR ASSY -> CHECK GAS LEAKAGE ON EXHAUST SYSTEM -> PERFORM CONFIRMATION DRIVING PATTERN
- 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