Fix P2473: STEP-BY-STEP diagnostic GUIDE!

The P2473: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 4 refers to an issue with the exhaust gas temperature sensor circuit for Bank 2 Sensor 4. This may be caused by a faulty sensor, wiring issues, or a problem with connectors, potentially affecting exhaust temperature monitoring and leading to inefficient engine operation or increased emissions.

P2473 – Quick Overview

CodeInformation
MeaningP2473: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 4
Is it serious?Yes, this code can lead to inaccurate exhaust temperature monitoring, potentially causing engine inefficiencies and higher emissions.
Possible causes– Issues with the exhaust gas temperature sensor circuit for Bank 2 Sensor 4
– Faulty sensor
– Wiring or connector problems
How to diagnose?– Inspect and test the exhaust gas temperature sensor circuit for Bank 2 Sensor 4
– Check wiring and connectors
– Replace faulty sensor or components as needed

P2473 Meaning

The P2473: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 4 code indicates that there is an issue in the circuit associated with the exhaust gas temperature sensor for Bank 2 Sensor 4. This could be due to a problem with the sensor itself, faulty wiring, or poor connections, leading to incorrect temperature readings. This can affect the engine’s ability to maintain proper exhaust gas temperatures, impacting fuel efficiency and emissions control.

Step-by-step diagnostic guide

ActionDescriptionTools Needed
Check for Other CodesUse an OBD-II scanner to determine if there are any additional codes that could provide more context to the issue.OBD-II Scanner
Inspect Sensor and Wiring VisuallyExamine the exhaust gas temperature sensor for visible damage. Inspect the wiring and connectors leading to Bank 2 Sensor 4 for signs of corrosion, fraying, or loose connections.Flashlight, Safety Gloves
Test the Sensor CircuitUse a multimeter to test the circuit connected to Bank 2 Sensor 4. Check if the readings match the manufacturer’s specifications for proper operation.Multimeter, Manufacturer’s Specifications
Check for Wiring IntegrityUse a multimeter to test continuity in the wiring between the sensor and the control module. Move the wires while testing to detect any intermittent faults or damaged areas.Multimeter
Inspect ConnectorsVerify that all connectors are secure and free of rust or other damage. Clean the connectors and ensure a solid connection. Replace any damaged connectors if necessary.Contact Cleaner, Replacement Connectors
Replace Faulty SensorIf the exhaust gas temperature sensor is confirmed to be faulty, replace it with a new one. Ensure the replacement part meets manufacturer standards.Replacement Sensor, Basic Hand Tools
Clear Code and Test DriveClear the P2473 code using an OBD-II scanner, and take the vehicle for a test drive. Monitor the sensor readings to confirm that the issue has been resolved.OBD-II Scanner, Vehicle Owner’s Manual
Recheck for CodesAfter completing the test drive, use an OBD-II scanner to verify if the P2473 code has been cleared and no other codes have appeared. If the code returns, further investigation may be necessary.OBD-II Scanner
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