Guide To P2207 OBD Error Code Solutions

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Is your car having an affected performance issue? Is there black smoke emitting from the car exhaust? Is there a sudden drop in the fuel economy? All these are the indications to the OBD Code P2207 being stored and flashed in the Powertrain Control Module (PCM).

OBD code P2207 means NOx Sensor Heater Control Circuit High Bank 1.

This diagnostic trouble code (DTC) is a generic powertrain code and applies to many OBD-II vehicles (1996-newer). That may include but is not limited to vehicles from VW, Audi, Mercedes Benz, Ford, Mitsubishi, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration.

A stored a code P2207 in your diesel-powered vehicle means that the powertrain control module (PCM) has detected high voltage in the NOx sensor heater control circuit for the exhaust system for engine bank 1.

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

• Faulty, damaged or dirty MAP sensor
• Open or short in the NOx sensor circuit
• Ground circuit open or shorted
• Faulty PCM that might require reprogramming

1. Electronic Control Unit - ECU monitors the temperature differences in the boost converter with the help of the temperature sensors to prevent the converter from overheating and malfunctioning. Thus, replace faulty ECU immediately.
2. Automatic Transmission Module - Sometimes the automatic transmission module is unable to communicate or correctly anticipate the speed of the vehicle and thus creates difficulty in gear shift leading to sluggish acceleration, throttle response and stalling. Thus, can also hamper a lot of components physically and thus must be check for and replaced, if required.
3. Engine Control Module - ECM failures and faults can be very difficult to find and resolve as these are very rare and might require a complete reprogramming of the system to avoid wrong codes from getting stored in the system, leading to misdiagnosis. Replace it now!
4. Powertrain Control Module - Faulty PCM can disrupt the normal functioning of the vehicle by affecting the transmission system and the fuel delivery system. This will cause the system to store wrong OBD error and thus can lead to misdiagnosis.
5. Oxygen Sensor - If the fuel to air ratio is not correct, the engine may work in lean or rich conditions. This not only hampers the performance output, but also affects the fuel economy, exhaust emissions and acceleration. Thus, a faulty oxygen sensor must be replaced as if it important for keeping in check the oxygen levels entering/exiting the engine.
6. Exhaust Gas Recirculation Valve - It is auto part commonly found on many road going automobiles. It is a part of the vehicle’s exhaust gas recirculation (EGR) system, an emissions system that is designed to recirculate exhaust gases back into the vehicle’s intake so that it can reduce cylinder temperatures and NOx emissions. Purchase top notch exhaust gas recirculation valve from us at economical prices.
7. Diagnostic Tool - In order to be that DIY guy, you need few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come handy to do so, so why not have a look?
8. Diesel Exhaust Fluid Pump - For the proper functioning of the transmission system, the diesel exhaust fluid pump needs to work properly. 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!
9. Fuel Injector - The fuel injector is responsible for maintaining the optimal levels of the air to fuel ratios in the combustion chambers for the maximum out from the engines. It the fuel injector goes down, it hampers the entire efficiency of the engine. Thus, check and replace the bad injector now!

Have you ever wondered why is it so important to know the symptoms of the problem? Well, it is extremely essential to know the symptoms of the problem in order to detect it. Keeping this in mind, let’s throw some light on few common symptoms of OBD error code P2207.

Common Symptoms

• Check Engine Light flashing in the display monitor
• ECM indicating the stored error code
• Exponential increase in the fuel consumption pattern
• Rough engine with occasional stalling
• Lack of power and acceleration due to failure of fuel delivery system
• Black or white smoke coming from the tailpipe

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 P2207, you will need to undergo the following replacements:

• It is essential to restore the flawed NOx sensor
• Repair or replace the quirky powertrain control module
• Rehabilitate the defaults in the NOx sensor heater control circuit
• Carefully adjust the faults in the SCR controller
• Recondition the non-functioning PCM or programming error

Apart from this, you might need to replace other damaged parts too like Diesel Exhaust Fluid, Exhaust System, Diesel Particulate Filter, PCM, NOx Sensor, ECM, NOx Sensor Wiring, Catalytic Converter and more. You can easily find all these parts with us. Not only that you can get these parts shipped to your door free, if your cart value happens to exceed $99.

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

• It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2207 code to be stored:
• A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of vehicle specific diagnostic information will be required to diagnose a code P2207. Locating a technical service bulletin (TSB) that matches the vehicle year, make, and model; as well as the engine size, code/s stored, and symptoms exhibited, could yield helpful diagnostic information.
• Begin my diagnosis with a visual inspection of the NOx sensor circuit wiring harnesses and connectors. Burnt or damaged wiring and or connectors should be repaired or replaced before proceeding.
• Continue by plugging the scanner into the vehicle diagnostic connector and retrieving all stored codes and pertinent freeze frame data. Consider writing this information down before clearing the codes.
• Test drive the vehicle until the PCM either enters readiness mode or the code is reset. If the PCM enters readiness mode at this time, the code is intermittent and may be much more difficult to diagnose. If this is the case, the conditions which contributed to the code being stored may need to worsen before an accurate diagnosis can be made.
• If the code is immediately reset, completing the next step of the diagnosis will require that you search your vehicle information source to obtain diagnostic flow charts, connector pin-out charts, connector face views, as well as component testing procedures and specifications.
• Use the DVOM to test (voltage drop) on all NOx control system grounds. Continue by testing the power supply to the NOx control system. Test fuses with the circuit loaded to avoid misdiagnosis. 
• If input voltage is present on the relay but output voltage is not detected, suspect that the relay is bad. If the NOx sensor voltage output circuit is within parameters, use the DVOM to test the fuel pressure sensor and fuel pump. If any of these components fails to meet manufacturer’s specifications, suspect that it has failed.

Common Mistakes When Diagnosing the P2207 Code

Diagnostic errors usually occur due to not following the procedure properly. Always follow the test procedure in the diagnosis to ensure there is the correct voltage to the sensor and from the sensor to the ECU.