P2206 OBD Error Code: Problem & Solutions

<<See All OBD Codes

Is your vehicle engine performance decreasing and you notice an increase in the fuel consumption and exhaust emissions? Do you notice the Malfunction Indicator Light illuminated on the dashboard? If there are faults in the exhaust system of the car, especially the NOx sensor heater circuit for engine bank1, then P2206 fault code is definitely going to trigger up.

If your diesel-powered vehicle has stored a code P2206, it means that the powertrain control module (PCM) has detected improper voltage that is outside the normal expected value range within the control circuit for the NOx sensor heater, bank 1.

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

• Damaged/faulty MAF sensor
• Faulty MAP sensor
• Faulty wirings and connectors of the NOx sensors
• NOx sensor heater circuit damaged
• Dirty Air Cleaner
• Defective Electronic Throttle Body
• Obstruction in hose from intake manifold to MAP sensor
• Vacuum leakage in the intake manifold, air induction system, or throttle body
• Damaged/Loose electrical connection related to the sensor and circuit
• Faulty/Damaged or improperly installed Throttle Position Sensor

1. Engine Control Module - ECM faults are rare but can be a big problem as faulty ECM will cause wrong vehicle operations and can also result in wrong OBD codes getting stored in the system which can also cause misdiagnosis. Thus, replace faulty ECM components now!
2. Electronic Control Unit - The ECU coordinates with the temperature sensor to control the blower fan for keeping the battery temperatures under control. So, replace faulty ECU components now!
3. 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.
4. Fuel Injector - Faulty fuel injector, it will cause rough idles and difficulty in starting. Also, it will affect the fuel economy and engine performance. Fuel injector can also crack or break leading to leakages and should be replaced immediately.
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. Powertrain Control Module - Check for PCM error which might be due to circuit faults that might require complete replacement and reprogramming. Replace it now!
7. Oxygen Sensor - Inspect for faulty O2 sensor that can affect the engine combustion process and the exhaust emissions. Thus, it is important to understand its importance and replace faulty oxygen sensor now!
8. Manifold Absolute Pressure Sensor - The MAP sensor would fail by getting clogged, contaminated, or sometimes damaged. There can be times when the engine heat would “overcook” the electronics of the MAP sensor and can cause cracks vacuum lines. So, it is very important to take proper care of the MAP sensor and in case you need a new one, then Parts Avatar is here at your service.
9. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to grab amazing deals.

Next important thing you need to know about are the common symptoms for this obd error code P2206 with your fuel volume control.

Common Symptoms

• Appearance of the service engine soon light
• Sometimes there might be no symptoms at all
• Black smoke emitting from the exhaust pipe during acceleration

After you know the symptoms of your vehicle’s problem, it becomes easy to detect it and get started with solving it. So, next on our list is few common steps to correct this issue with your vehicle.

• Carefully adjust the faults in the bank 1 NOx sensor heater
• The manifold absolute pressure sensor should be restored to working order
• Recondition the non-functioning ECM
• You must fix the defective EVAP system purge valve
• Make sure to mend the faulty gas cap seal
• It is essential to restore the leaking exhaust system components
• Repair or replace the quirky crankcase ventilation valve and grommet
• Rehabilitate the leaking intake manifold gaskets
• The malfunctioning oxygen sensor should be repaired or replaced as per the need
• It is necessary to perform proper service of the unsound fuel pump
• Adjust the flawed fuel pressure regulator
• The clogged fuel filter should be restored properly
• Tighten the intake manifold bolts

To do all this, you will need few high-quality auto parts such as Diesel Exhaust Fluid, Exhaust System, Diesel Particulate Filter, PCM, NOx Sensor, ECM, NOx Sensor Wiring, and Catalytic Converter 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.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• Check for damaged or broken wirings and connections in relation to the NOx sensors and circuits.
• Check the air cleaner element and look for any signs of clamps or leaking in the pipe starting from the MAF to the Throttle body.
• Then, check the vacuum lines in intake manifold for any cracks, obstructions, or looseness, as these can cause vacuum loss.
• Detach every sensor and check the connector for signs of corrosion and bent pins that are pushed out.
• Inspect for leaky manifold in the intake and clean the carburetor using the carburetor cleaner. The engine RPM will change noticeably after a short shot of the carburetor cleaner over a leak.
• Check the throttle body for signs of coated coke (black greasy substance) and get it cleaned.
• Also check for any faults in the PCM and replace/reprogram it as necessary. Although this problem is rare but if all the other components are fine, then the check is necessary.

Common Mistakes When Diagnosing the P2206 Code

• Replacing fuel or ignition system parts
• Replacing one or more sensors without testing their functionality prior to the replacement.
• Not checking the wiring and connectors for damages
• Replacing PCM, without checking other components for errors