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P0273 OBD Error Code: Problem & Solutions

OBD Code P0273 - Cylinder 5 Injector Circuit Low

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The P0273 is a trouble code which can be defined as cylinder 5 injector circuit being low. 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.

Learn More about OBD Error Code P0273

It is a fault code which would mean that the powertrain control module has originated a level of voltage in the fuel injector from the cylinder #5 which is actually lower than what is accepted. This would mean that there is a breakdown in the fuel injector. Now when this thing would happen, it can set off a ripple effect which would go through the rest of the car engine. This is the reason why the operational parameters of the engine would change when this fault code would be logged.

 

What causes this problem with the Cylinder 5 Injector Circuit Low?

 

  • The 5-fuel injector might be faulty, damaged or simply dirty
  • The connector or wiring associated with the #5 fuel injector could be damaged
  • An internal return spring can be weak or damaged and might hurt the #5 fuel injectors overall performance
  • The powertrain control module might not work correctly

Replace/Repair These Parts To Fix OBD Code P0273

  1. Fuel Injector - OBD Code P0273 can appear because of faulty Fuel Injector. But top-notch new fuel injector online.
  2. Fuel System - There can be some issues with the Fuel System due to which you may see P0273 code appearing over and over again. Visit us to buy best quality Fuel System parts online.
  3. Engine Wiring Connector - Are you facing some faults in your Engine Wiring Connector? Don’t worry and get them replaced or else P0273 code can turn up.
  4. Powertrain Control Module - Common cause behind this P0273 error code can be some fault in Powertrain Control Module. So, it will be a good decision to replace them now.
  5. Engine Control Module - Engine wiring connector is perfectly fine but still but having that trouble code P0273 flashing? In such a situation your Engine Control Module might be faulty. Why don’t you think of getting that replaced?

Symptoms Of OBD Error Code P0273

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0273 here:


Common Symptoms


  • The check engine light will might turn on
  • If the fuel injector is not working properly, the vehicle is going to start needing more gas to continue performing. The #5 cylinder might also crack because of having to work so hard
  • The car engine might have a tough time starting. It will most likely struggle to accelerate on the road or even stall. It might misfire as well

How To Correct P0273 Cylinder 5 Injector Circuit Low

Want to correct the Trouble Code P0273? Read these points mentioned below:


  • Make sure that you replace the #5 fuel injector
  • The fuel injector should be cleaned
  • If there are some faults in the wires, then they should be replaced

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Easy Diagnosis Of Engine Error OBD Code P0273

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


  • The mechanic might use an OBD-II sensor to see which trouble codes have been stored
  • The #5 fuel injector should be inspected
  • Then the wiring leading to the #5 fuel injector should be carefully examined
  • Carefully check the power supply


Common Mistakes When Diagnosing The P0273 Code


  • Generally, this type code gets stored in because of a faulty injector, but it does not mean that the mechanic should rush to judgement and replace it. Make sure that you carry out a comprehensive diagnostic process to test every possibility.
  • A lot of mechanics would know that the fuel injector is involved just by listening to the owner describe the symptoms listed above. They might take some time with assessing the situation. If proper scanning is not done, then they might fix the fuel injector and clear that code but may not realize there can be some other problems as well which might exist. 

Other Diagnostic Codes Related To OBD Code P0273

P0270 - Cylinder 4 Injector Circuit Low

P0271 - Cylinder 4 Injector Circuit High

P0272 - Cylinder 4 Contribution/Balance Fault

P0273 - Cylinder 5 Injector Circuit Low

P0274 - Cylinder 5 Injector Circuit High

P0275 - Cylinder 5 Contribution/Balance Fault

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