Feedback

P2204 - OBD Trouble Code

OBD Code P2204 - NOx Sensor Circuit Intermittent Bank 1

<<See All OBD Codes

The trouble code P2204 can be explicated as NOx Sensor Circuit Intermittent Bank 1 Issue. 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. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

Learn More About OBD Error Code P2204

Like oxygen sensors, NOx sensors will not work unless they are at the correct temperature, so they have an integrated heater that is also module-controlled. The power supply to the NOx sensor module is critical to proper sensor operation. When the PCM detects that the NOx sensor circuit is not performing as per expectations, OBD code P2204 gets stored in the system.

 

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

 

  • Faulty/Damaged MAF Sensor
  • Leaky/Cracked rubber hoses from vacuum to intake tube
  • Heavily Contaminated Catalytic Converters
  • Faulty/Damaged wiring harness to the sensor circuit
  • Open/contaminated EGR (Exhaust Gas Recirculation) valve
  • Faulty PCV (Positive Crankcase Ventilation) valve
  • NOx sensor problematic
  • NOx circuit wiring and connector damaged
  • Faulty MAP (Manifold Absolute Pressure) sensor

Replace/Repair These Parts To Fix OBD Code P2204

  1. Engine Control Module - The solenoid might cause a short in the engine control module because of corrosion in the solenoid or the wire running from the solenoid to the ECM harness.
  2. Electronic Control Unit - The ECU power management control module keeps in check the hybrid battery charging functions. If the ECU is faulty, the battery pack will not be able to properly get charged and thus, the ECU might need replacement.
  3. Powertrain Control Module - A trouble with the PCM would mean that it is unable to determine the right fuel mixture and would send the car engine either more or less fuel than it requires. Now when the engine gets more, the carbon emission would increase and fuel economy would drop. In case of the opposite, the engine will choke, stutter, and might start stalling sometimes.
  4. Fuel Injector - Bad fuel injectors can cause starting issues, poor idles and affected performance. Thus, the replacements are in order. Buy new fuel injectors now!
  5. Exhaust Gas Recirculation Valve - If the PCM detects any fault in the vehicle’s EGR valve circuit, it will set up the check engine light so that the driver is notified about the fault. Properly check for the EGR valve faults leading to this OBD code getting stored in the system. Get the faulty EGR valve replaced or else this fault code can turn up.
  6. Diesel Exhaust Fluid Pump - Faulty DEF pump can lead to increased emission and affected vehicle performance. It can also hamper the fuel economy and the power output of the vehicle. Thus, replace faulty DEF pump now!
  7. Diagnostic Tool - Usually any OBD code problem requires deep insight into the problem and high-grade tools in order to fix it properly. Thus, buy quality diagnostic tools form us!
  8. Fluid Pump Control Module - If the control module is faulty, the pump will not be able to work properly and will not be able to transfer fluid to the transmission and hydraulic system efficiently. Thus, replacements are in order.
  9. Oxygen Sensor - The O2 sensor can also be at fault leading to lean or rich engine conditions and thus affecting the engine performance and improper fuel consumption. Buy new sensor and replace the faulty one now!
  10. Engine Coolant Temperature Sensor - If there are some issues in your car engine coolant temperature sensor, then it would result in the illumination of the check engine light. The check engine light would keep on flashing until the problem is addressed. Buy new engine coolant temperature sensor from us online.

Symptoms Of OBD Error Code P2204

For us our customers are everything, and that’s why we will help you to diagnose P2204 code by mentioning some important symptoms below:

 

Common Symptoms

 

  • Reduced/abnormal engine performance
  • Affected fuel efficiency
  • Lean exhaust codes
  • Increased emissions from the tailpipe

How To Correct P2204 NOx Sensor Circuit Intermittent Bank 1

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.

 

  • Bad fuel injector replacement
  • Bad NOx sensor replacement
  • NOx sensor circuit wiring and harness replacement
  • Diesel Exhaust Fluid Pump replacement
  • EGR valve replacement
  • Faulty wiring and connector repairs
  • Powertrain Control Module repair and reprogramming

 

Apart from this, you might need to replace other damaged parts too like Diesel Exhaust Fluid, Diesel Particulate Filter, PCM, ECM, NOx sensor, NOx sensor Wiring, NOx sensor Connector 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.

Easy Diagnosis Of Engine Error OBD Code P2204

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

 

  • Take the help of an experienced mechanic who will visually inspecting the exhaust system.
  • Find and freeze frame data with the code. Then, clear the code and take the vehicle on a test drive under the same conditions.
  • If the code reappears, perform a visual inspection of the components and its wiring.
  • If the wiring is okay, the injector itself will be tested to confirm operation.
  • The mechanic will repair or replace faults in relation to the reductant injection air pressure sensor, DEF pump and EGR valve. Also check for any wiring and harness issues and correct the damaged wirings.
  • Check for the voltage output from the EAS fuel injector and if it isn’t under the desired range, suspect it to be fault and might need replacement.
  • The NOx sensor voltage output must be check for and replaced if not functioning properly. Also check for the faulty/damaged wiring and harness in association to the sensor circuit.
  • If there is no problem found, check for the faulty ECU. Although, this fault is very rare but can be a reason for problematic exhaust system, thus hampering the engine performance. The ECU needs to be replaced in such condition and has to be reprogrammed to erase any stored faulty error.

 

Common Mistakes When Diagnosing the P2204 Code

 

  • Powertrain Control Module (PCM) faulty
  • Exhaust NOx sensor issue
  • Wiring and connector issue

Other Diagnostic Codes Related To OBD Code P2204

P2200 - NOx Sensor Circuit Bank 1

P2201 - NOx Sensor Circuit Range/Performance Bank 1

P2202 - NOx Sensor Circuit Low Bank 1

P2203 - NOx Sensor Circuit High Bank 1