The P2466: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3 code refers to a problem with the exhaust gas temperature sensor circuit for Bank 2 Sensor 3. This can be due to a faulty sensor, issues with wiring, or connector problems, leading to inaccurate temperature readings and potentially affecting the emission control systems, including DPF regeneration.
P2466 – Quick Overview
Code | Information |
---|---|
Meaning | P2466: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3 |
Is it serious? | Moderate – incorrect temperature readings can prevent proper exhaust and emissions management, affecting DPF regeneration and overall efficiency. |
Possible causes | – Issues with the exhaust gas temperature sensor circuit for Bank 2 Sensor 3 – Faulty sensor – Wiring or connector problems |
How to diagnose? | – Inspect and test the exhaust gas temperature sensor circuit for Bank 2 Sensor 3 – Check wiring and connectors – Replace faulty sensor or components as needed |
P2466 Meaning
The P2466: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3 code indicates that the vehicle’s ECU has detected an issue with the exhaust gas temperature sensor located at Bank 2, Sensor 3. This sensor measures exhaust temperature, which is crucial for maintaining optimal emissions control and efficient functioning of the diesel particulate filter (DPF). If this sensor is malfunctioning or its circuit is compromised, incorrect data may be sent to the ECU, affecting engine performance and emissions control.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to determine if there are any additional related fault codes. Related codes may give more context to the issues affecting the exhaust temperature system. | OBD-II Scanner |
Inspect the Exhaust Gas Temperature Sensor | Visually inspect the exhaust gas temperature sensor for Bank 2 Sensor 3. Look for any visible damage, such as cracking, wear, or soot buildup that could affect its performance. | Flashlight, Safety Gloves |
Test the Sensor Circuit Voltage | Use a multimeter to measure the voltage in the circuit connected to the exhaust gas temperature sensor. Compare the readings to manufacturer specifications to verify if they are within acceptable ranges. | Multimeter |
Inspect Wiring and Connectors | Inspect all wiring and connectors associated with the exhaust gas temperature sensor. Look for signs of fraying, corrosion, loose connections, or damaged wires that may cause erratic or no signal. | Flashlight, Multimeter |
Test Sensor Resistance | Use a multimeter to check the resistance of the temperature sensor. Compare the readings to manufacturer specifications to determine if the sensor is functioning correctly. | Multimeter |
Repair or Replace Damaged Wiring or Connectors | If wiring or connector issues are found, repair or replace them as necessary to restore the correct circuit function. Proper electrical flow is necessary for accurate sensor readings. | Wiring Repair Kit, Connector Tools |
Replace the Sensor if Faulty | If the exhaust gas temperature sensor is not functioning correctly, replace it to ensure accurate temperature monitoring for Bank 2. This will help maintain optimal emissions control. | Replacement Sensor, Wrench Set |
Clear the Code and Test Drive | After repairs, clear the P2466 code using an OBD-II scanner. Take the vehicle for a test drive and monitor the exhaust gas temperature sensor to verify proper readings and ensure the issue is resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | Re-scan the vehicle to confirm that the P2466 code has not returned. If the code persists, further diagnostics may be required to address underlying issues affecting the circuit. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)