P2223 - OBD Trouble Code
OBD Code P2223 - NOx Sensor Heater Sense Circuit Low Bank 2
The trouble code P2223 can be elucidated as NOx
Sensor Heater Sense Circuit Low Bank 2. 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 system would then recycle these using various methods. Given the
harsh environment of these sensors, they are composed of a combination of
ceramic as well as certain type of zirconia.
Learn More About OBD Error Code P2223
This
trouble code is generic, which would mean that it can apply to all the vehicles
which are equipped with the OBD-II or the vehicles which are made since 1996 up
to the present. The specifications on the definition, the troubleshooting steps
as well as repairs can always vary from one vehicle make to another. The NOx
sensor heater sense circuit is being monitored by the engine control module.
This trouble code would be set by the ECM when the NOx sensor heater sense
circuit reading would not be as per the specifications set by the manufacturer.
What causes
this problem with the NOx Sensor Heater Sense Circuit Low Bank 2?
- Catalytic
converter might be flawed
- Inexact
fuel mixture
- Faulty
coolant temperature sensor
- The
manifold air pressure sensor might not be functioning properly
- Defective
mass air flow sensor
- Unusable
fuel injection part
- The fuel
pressure regulator is broken
- There were
ignition misfires
- Some leaks
in the exhaust manifold, flex hose, down pipe and other exhaust component
- There can be inoperative oxygen sensors
Replace/Repair These Parts To Fix OBD Code P2223
- Engine Control Module - Dead cells in batteries can cause a failure in the engine control module. Many times a battery is left in the rig long after a cell has died. This would affect the grounding in the car battery.
- Oxygen Sensor - Oxygen sensor plays a vital role in anticipating the levels of oxygen measured for the optimal air to fuel ratios for the combustion process and also for the exhaust emissions to keep the emission levels under check. Thus, replace faulty oxygen sensor now!
- Powertrain Control Module - If there are some faults in the PCM, then it may throw off the timing and fuel settings of the engine, which can negatively affect the performance. A flawed PCM may cause the vehicle to experience a reduction in fuel efficiency, power as well as acceleration.
- Exhaust System Parts - A burning smell of the engine is likely to be seen as soon as there is a fault in any of the exhaust system parts. Also, performance issues are likely to arise due to a failure in the exhaust manifold. A leak or crack also leads to a reduction in the power, acceleration and efficiency of the vehicle. Repair or replace now.
- Electronic Control Unit - Do you know that the poor performance or unexplained drops in fuel economy or efficiency are often associated to onboard car computer problems, or defective ECU issues?
- Diagnostic Tools - Use factory grade diagnostic tools to resolve OBD code P2223 error. Buy new diagnostic tools and equipment for us.
Symptoms Of The OBD Error Code P2223
You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.
Common Symptoms
- Intermittent hampering
- The engine might fail to start when it is hot
- Reduction in the engine performance
- When accelerating, there may be a shrilling and hanging back
- The engine might run lean or rich on bank #2 exclusively
How To Correct NOx Sensor Heater Sense Circuit Low Bank 2 Issue
Looking
out for some ways with the help of which you can correct this fault code? Then
you have arrived at the correct place. We are here to help you out, so you must
check out the steps mentioned below as follows:
- You must
fix the defective coolant temperature sensor
- Make sure
to mend the faulty catalytic converter
- Rehabilitate
the defaults in the mass air flow sensor
- The
malfunctioning PCM/ECM should be repaired or replaced as per the need
- Carefully
adjust the faults in the fuel pressure regulator
- The
manifold air pressure sensor should be restored to working order
- Recondition
the non-functioning oxygen sensors
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no need to get strained if your OBD Code is still flashing up as we are here at
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Easy Diagnosis Of Engine Error OBD Code P2223
Here are
some steps which you should follow in order to diagnose this fault code:
- After
verifying the P2223 code with an OBD-II scanner, the mechanic should begin with
a visual inspection of all electrical components. The first and the foremost
step is to clear the codes and then the entire vehicle should be re-scanned.
Now if you find out that none of the DTCs (Diagnostic trouble code) 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 are 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 P2223 Code
- NOx
sensor might start failing
- Some
issues related to the powertrain control module
- Issues
with the car wiring