P2208 - OBD Trouble Code

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The trouble code P2208 can be elucidated as NOx Sensor Heater Control Circuit Bank 1 Issue. This code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made from 1996 up to present. It’s also more common among Audi, Citroen, Chevrolet, Ford, Hyundai, Nissan, Peugeot, and Volkswagen vehicles. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model, powertrain configuration type, to another.

If a NOx sensor fails, the vehicle can have multiple faults on the dashboard which will cap the power of your truck (Limp mode). As NOx sensors are directly linked to the SCR system, there will also be emission and general SCR system faults, which only add onto the list of issues. Thus, when the PCM notes that the NOx sensor heater control circuit for bank 1 is not working properly, OBD code P2208 gets flashed.

What causes this problem with the NOx Sensor Heater Control Circuit Bank 1?

• Faulty MAP (Manifold Absolute Pressure) sensor
• Contaminated/Damaged MAF/VAF sensor
• Damaged wiring or connectors that may be short or open
• Breakage and leaky air inlet pipe
• Problematic Engine Vacuum Pump
• Faulty PCM that may require replacement or reprogramming
• Poor electrical connection of NOx sensor or circuit

1. Exhaust Gas Recirculation Valve - Did you just see check engine light flashing on your dashboard? If the computer would detect some fault with the automobile’s EGR valve circuit, then it would set up the check engine light so that the driver is notified about the fault. Don’t waste time and get them replaced or else this fault code can turn up.
2. Engine Control Module - Most of the time it is difficult to intercept the ECM faults and thus must be checked for thoroughly. There can be a problem with the circuit or the software might have malfunctioned. Thus repair, replace or reprogram the component as per requirement.
3. Powertrain Control Module - If the PCM is faulty, it can store wrong OBD codes and can lead to misdiagnosis. This can happen due to misinterpretation of data received from the various sensors and components which also affects the vehicle’s performance. Thus, replace it immediately.
4. Fuel Injector - Affected fuel injectors can cause reduced performance and throttle response. It can also affect the fuel economy and affect the engine emission. Thus, replace faulty fuel injector now!
5. Diesel Exhaust Fluid Pump - The diesel exhaust fluid pump needs to work properly if the transmission system has to perform. If it is not functioning, the transmission may slip and cause harsh shifts too. Thus, replace faulty pump now and buy a new one from us!
6. Electronic Control Unit - If the ECU is at fault, it will not be able to read the boost converter temperatures correctly leading to underperformance. Thus, replace faulty ECU now!
7. Diagnostic Tool - Choose from our diagnostic tools collection that will come handy to detect and correct the OBD error code.
8. Mass Air Flow Sensor - Any problem with the MAF sensor can affect the engine performance and the system will not be able to manage the air to fuel ratio properly. Buy new MAF sensor now!
9. Throttle Position Sensor - If the TPS is damaged or faulty, it will result in loss of engine power and acceleration along with reduced fuel economy. Replace it immediately, if faulty.
10. Catalytic Converter - If the catalytic converter is damaged, it will affect the fuel delivery and the air intake system respectively. Also, it may result in increased emission from the exhaust. Thus, it becomes important to replace faulty catalytic converter immediately.
11. Manifold Absolute Pressure Sensor - MAP sensor at fault can cause increased fuel consumption, lack of power and failing an emission test. Thus, replace it now!

Well, if you are looking to know about the common symptoms related to this error code P2208, we are have worked out a small list to help you discover this error code with your vehicle.

Common Symptoms

• Loss of engine power and acceleration
• Exhaust being rich and lean
• Increased fuel consumption
• Check engine light illuminated
• Black smoke from exhaust pipe

Wish to correct this error code with your vehicle? Do you know what all you should do to make your car free from this code? Well, don’t worry! We are here to guide you.

• Clean the MAF (Mass Airflow Sensor) with a safe electronic cleaner, if dirty.
• Replace MAF (Mass Airflow Sensor), if found faulty.
• Replacement of damaged MAP (Manifold Absolute Pressure Sensor)
• Check for any vacuum pump and air intake pipe leakages/damages.
• Replace faulty/broken/open/short wiring and connectors to the NOx sensors and circuits.

Apart from the fuel injector, you might need to undergo few more replacements. You might need Diesel Exhaust Fluid, Diesel Particulate Filter, PCM, ECM, NOx Sensor, Catalytic Converter, Coolant Temperature Sensor, Air Pressure Sensor, Mass Air Flow Sensor, Fuel Injection Parts, Fuel Pressure Regulator, Exhaust Manifold, Flex Hose, Oxygen Sensor and many other parts. Where to get them from? Well, if you want quality parts, then we can prove to be your dream destination.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2208 code to be stored:

P2208 is properly diagnosed with an advanced scan tool capable of factory sensor readings (not just one from an auto parts store). A qualified technician can read the data from the advanced scan tool to determine when the problem occurred, or if it is still occurring. They may clear the code/light and test drive the vehicle while monitoring the scan tool data to see if the fault returns or is present.

Based upon the conditions of the test, possibly clearing the code, and road testing the car while monitoring the data, further diagnosis may be required. Diagnosis may require multiple tools such as:

• A technician typically begins by hooking the vehicle up to an OBD-II scanner in order to verify that the code is present, and check for other codes.
• This data along with freeze frame data is recorded, and the codes are then cleared to see if they reoccur.
• Next, there should be a visual inspection of the wiring and connectors to check for loose connections, corrosion, or shorts.
• Replacement of Damaged wiring/connections to the MAF (Mass Air Flow) Sensor and circuits.
• Repair faulty PCM sensor that may require reprogramming.
• Replace Leaky and damaged intake/inlet pipe immediately
• Faulty MAF (Mass Airflow Sensor) needs replacement as it directly hampers the engine performance.

Common Mistakes When Diagnosing the P2208 Code

• Always tale help of a qualified technician with experience to counter the OBD code errors. Use professional factory grade scanning and diagnostic tools to diagnose this problem.
• Missing the diagnosis steps leading to misdiagnosis and error to return
• Though the most common cause is a clogged fuel filter, it will not be a necessary problem for all vehicles. Thus, proper inspection needs to be done
• It is important to follow the steps so unnecessary repairs are not performed wasting time and money. Never forget to check for faulty or damaged wiring and connections as they can be the reason for the OBD error code and can be a cheap solution to the problem.