Error Code P2224: What It Means & What To Do?

NOx (Nitrogen Oxide) sensors are mainly utilized for the emission systems in diesel engines. Their main function is to detect NOx levels coming out of the exhaust after burning in the combustion chamber. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

 

What causes this problem with the NOx Sensor Heater Sense Circuit High Bank 2?

 

• Unusable catalytic converter
• Invalid fuel mixture
• Quirks in the coolant temperature sensor
• There can be inoperative manifold air pressure sensor
• The mass air flow sensor might be damaged
• Some issues related to the fuel injection part
• Imperfect fuel pressure regulator
• Ignition misfiring issues
• There might be dripping from the exhaust manifold, flex hose, down pipe, or some other exhaust components
• There can be distorted oxygen sensors

1. Exhaust System Parts - You are likely to notice smoke coming out of the system if you don’t change your exhaust system parts right away when they are diagnosed as defective. This is harmful not only for the system but also for the plastic parts located nearby. Parts Avatar is just the right place for you that offers the excellent quality products at the prices you have always been looking for.
2. 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 checks the oxygen levels entering/exiting the engine.
3. 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!
4. 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.
5. Engine Coolant Temperature Sensor - One major symptom of defective engine coolant temperature sensor is an overheating car engine. This can also cause engine misfiring. Take care of your car engine coolant temperature sensor and replace it if needed.
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!

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P2224:

 

• You must fix the defective manifold air pressure sensor
• Make sure to mend the faulty fuel pressure regulator
• The malfunctioning coolant temperature sensor should be repaired or replaced as per the need
• Carefully adjust the faults in the oxygen sensors
• The PCM/ECM should be restored to working order
• Recondition the non-functioning mass air flow sensor
• Adjust the flawed catalytic converter

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade PCM, exhaust system parts, oxygen sensors, engine coolant temperature sensor, auto exhaust components, denso oxygen sensor, bosch oxygen sensor, bosch o2 sensor and a lot more for our precious customers.

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

 

• A technician begins by hooking the vehicle to an OBD-II scanner to verify that the code is present, and check for other codes.
• The freeze frame data along with current data is recorded, and the codes are then cleared to see if they reoccur.
• Clear the codes and then the entire vehicle should be re-scanned.
• Now if you find out that none of the DTCs are coming on as active right away, then the vehicle should be taken out for a test drive to check if it reappears.
• If only one of the codes is reactivated by the ECM, then you should continue the diagnostic for that particular one.
• After that the exhaust for any leakages should be checked. A good sign of a leakage would be black soot around cracks and gaskets of the system.
• Many a times it is very easy to replace the exhaust gasket. A fully sealed exhaust is integral to the sensors which are involved in your car exhaust system.
• Use an infrared temperature gun to monitor the exhaust temperature before and after the catalytic converter.
• Then it is essential to compare the results to the specifications of the manufacturer, so one should refer to the particular service manual for this.
• Now if the temperature of the catalytic converter is as per the specifications set by the manufacturer, then you must your focus to the electrical system involved with these sensors.
• Begin with the bank 2 NOx sensor harness and connector.
• Many a times these harnesses tend to crack and fail because of close proximity to extreme temperatures of the exhaust. The damaged wires should be repaired by soldering the connections and heat shrinking them.
• Examine the oxygen sensors involved in the bank 2 to ensure they are not quirky, which might alter the NOx readings downstream.
• If there are some flaws in the connector and it is not making sufficient connections or not locking properly, then it should be repaired or replaced.

Common Mistakes When Diagnosing The P2224 Code

 

• Some issues related to the powertrain control module
• Failure in the NOx sensor
• Issues related to the wiring