DTC P0030 Lambda Sensor Temperature Error (4JJ3 with DPD)

1. Engine control system check

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) Diagnostic system check-engine controls".

2. Current DTC check

1) Connect the scan tool.

2) Turn OFF the ignition switch for 1 minute or more.

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool. Is a DTC set?

Yes

Replace the heated oxygen sensor.

Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 with DPD) heated oxygen sensor removal".

Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 with DPD) heated oxygen sensor installation".

=>Go to Repair verification.

No

Go to Intermittent conditions of engine.

Refer to "202.Engine 15D.Symptom(4JJ3 with DPD) intermittent conditions of engine".

3. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch for 1 minute or more.

3) Start the engine.

4) Observe the DTC information with a scan tool.