Guide To P2485 OBD Error Code Solutions

<<See All OBD Codes

Is the check engine light illuminated on the dashboard? Do you hear knocking sound from the engine and failed emission tests? All these can be due to problematic EGT sensor thus affecting the exhaust system and thus the performance.

OBD code P2485 means Exhaust Gas Temperature Sensor Circuit/Open Bank 2 Sensor 5 Issue.

Modern vehicles are equipped with an exhaust gas recirculation system which has the task of routing the gas from the exhaust to intake reducing the combustion temperature in the engine. The reduced combustion temperature helps in minimizing the NOx emission and prevents the engine from making knocking sound.

However, the gas recirculation process is not always required. For instance, when the engine is idle, the combustion temperature is already low and there is no need for exhaust gas. To regular this, the EGR valve is present which opens and closes at perfect timing when it is required.

Thus, when the PCM detects an abnormal reading from the exhaust gas temperature sensor for bank 2 sensor 5, OBD code P2485 gets stored in the system.

What causes this problem with the Exhaust Gas Temperature Sensor Circuit/Open Bank 2 Sensor 5?

• Damaged or faulty EGT sensor
• Electrical connector at the EGT sensor can be damaged or disconnected
• Faulty or shorted wiring in the EGT sensor circuit
• Connection error with sensors due to blown fuses
• Exponential variance in the fuel pressure
• Excessive exhaust leaks and vacuum leaks on the engine
• Damaged catalytic converter due to debris accumulation
• Faulty ECU (Engine Control Unit) picking up wrong data

1. Diesel Particulate Filter – The diesel particulate filter acts as an important component in managing the particulate emission in the exhaust system. If the filter is damaged, it may lead to increased emissions and pollutants through the tailpipe. Thus, replace damaged filter now!
2. Engine Control Module – It is not always the components, but the ECM that can also be faulty. It can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
3. Diesel Exhaust Fluid Heater – If the diesel exhaust fluid heater is faulty, it will not be able to aid in conversion of harmful nitrous oxide compounds to nitrogen, carbon dioxide and water vapours to control emissions. Thus, replace it immediately.
4. Exhaust System Parts - Your exhaust system begins at the engine with the purpose of removing toxic gases and fumes from your vehicle. The components are a series of pipes, catalytic converters, sensors, mufflers, and often a resonator, as well as other emission devices. Thus, replace damaged exhaust system now!
5. Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases and thus needs through checks for system and software errors. Thus check and replace it, if required.
6. Electronic Control Unit – The ECU manages the cooling system to control the battery operating temperatures and thus must be replaced, if found faulty. Thus, buy new ECU modules and components from us!
7. Diagnostic Tool – Make use of quality diagnostic tools to resolve any OBD error code. Buy quality diagnostic tools from us!
8. Fluid Pump - The fluid pump is usually located in the cover of the transmission. It draws fluid from a pump in the bottom of the transmission and feeds it to the hydraulic system. It also feeds the transmission cooler and the torque converter. Thus, replace faulty fluid pump now!
9. Heated Oxygen Sensor – The fault in the oxygen sensor leads to failure of the fuel delivery system, and engine control module. Replace faulty sensors immediately.
10. Exhaust Gas Temperature Sensor - One of the first symptoms commonly associated with a bad or failing EGR temperature sensor is engine ping or knock. If the EGR temperature sensor malfunctions it will cause issue with the EGR system flow. This can cause cylinder temperatures to rise, which can cause engine ping or knock.

Interested in knowing the symptoms to obd code P2485? If yes, then you have arrived at the right place. We at PartsAvatar have listed out few common symptoms associated with this fuel injector problem.

Common Symptoms

• Engine stalling and not starting
• Rough idle and hard starting of the engine
• Carbon deposit build up impacting the spark plugs
• Malfunction Indicator Lamp (MIL) illuminated

After understanding the symptoms and few common causes behind the OBD error code, we are here to help you out in understanding the ways and means to correct the issue. To solve any issue, you need to follow certain steps, and to solve OBD error code P2485, you will need to undergo the following replacements:

• Diesel Exhaust Fluid Heater replacement
• Diesel Particulate Filter replacement
• Exhaust Gas Temperature Sensor replacement
• Faulty Reductant Injection valve replacement
• Faulty wiring and connector issue
• PCM repair and reprogramming

To do all this, you will need few high-quality auto parts such as Powertrain Control Module, PCM, Exhaust Gas Temperature Sensor, Diesel Particulate Filter, engine control module, Rocker arms, and turbocharger and so on. From where will you get them? From your local store? Well, why go there when you can order quality parts with us while sitting in the comfort of your home. So, just browse through our website and order your needed parts today.

Here are some steps which you should follow in order to diagnose this P2485 fault code:

• Use a professional grade diagnostic scan tool to check for all codes present (must be used to show live sensor data).
• Observe and take note of any freeze frame data that is associated with the code along with the current collected data after the test drive.
• After the confirmation of P2485, clear the code and perform a test drive under the same circumstances shown in the freeze frame data.
• If the P2485 code returns, visual inspection is performed to check the integrity of the wiring and sensor.
• Scan with a tool used to monitor live data of the EGT sensor from Bank 2 Sensor 5 if the previous step is found to be okay.
• Check and test the ECM if the sensor checks out as under the rarest of chances it may be possible that ECM is faulty and needs replacement.

Common Mistakes When Diagnosing the P2485 Code

The test procedure must be followed at all times to ensure that the wiring and other components are in good condition. Most of these problems are related to wiring touching the exhaust system. Always seek professional help to get the diagnosis as there might be many occasions where the diagnosis is much cheaper than perceived.