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DTC P0545 EXHAUST TEMPERATURE SENSOR CIRCUIT LOW-BANK 1

DTC P0545 EXHAUST TEMPERATURE SENSOR CIRCUIT LOW-BANK 1

DTC DETECTING CONDITION:


• Immediately at fault recognition

• GENERAL DESCRIPTION


TROUBLE SYMPTOM:


• Hard to start

• Erroneous idling

• Poor driving performance


Important

After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode .


WIRING DIAGRAM:


CHECK CURRENT DATA.

Start the engine.

Read the data of exhaust temperature sensor signal using Vehicle Diagnostic Interface or OBD-II general scan tool.

Note
• Vehicle Diagnostic Interface

For detailed operation procedure, refer to the “READ CURRENT DATA FOR ENGINE”.

• OBD-II general scan tool

For detailed operation procedures, refer to the OBD-II General Scan Tool Instruction Manual.


Is the temperature more than 1200°C (2192°F)?

Yes


No

• Repair the poor contact.

•
Note

In this case, repair the following:

• Poor contact in exhaust temperature sensor

• Poor contact in ECM

• Poor contact in joint connector



CHECK HARNESS BETWEEN EXHAUST TEMPERATURE SENSOR AND ECM CONNECTOR.

Turn the ignition switch to OFF.

Disconnect the connector from exhaust temperature sensor.

Turn the ignition switch to ON.

Read the data of exhaust temperature sensor signal using Vehicle Diagnostic Interface or OBD-II general scan tool.

Note
• Vehicle Diagnostic Interface

For detailed operation procedure, refer to the “READ CURRENT DATA FOR ENGINE”.

• OBD-II general scan tool

For detailed operation procedures, refer to the OBD-II General Scan Tool Instruction Manual.


Is the temperature less than 372°C (702°F)?

Yes

Replace the exhaust temperature sensor.


No

Repair the ground short circuit in harness between exhaust temperature sensor and ECM connector.