P0277 OBD Error Code: Problem & Solutions

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The P0277 is a trouble code which can be defined as Cylinder 6 Injector Circuit High. It means that there is an injector circuit malfunction which would affect cylinder six. 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.

When this fault code would appear, then the engine control module would report that either the resistance of voltage for the fuel injector circuit for cylinder six is out of specification.

This code would indicate that the powertrain control module has detected a voltage reading in the fuel injector circuit for the fuel injector in cylinder 6 which does not confirm to the reference value of the manufacturer.

What causes this problem with the Cylinder 6 Injector Circuit High?

• There can be some faults in the electrical connection
• The cylinder six injector might have either failed or is failing
• Some defects in the engine control module
• Electrical connections might not be working correctly

1. Fuel Injector - A faulty Fuel Injector can be troublesome. You can always rely on us as we have best auto parts for our customers.
2. Fuel System - If everything is alright with PCM, then there is surely some defect in Fuel System. Get it replaced before the situation gets worse.
3. Engine Wiring Connector - P0277 code can display due to some issues in the Engine Wiring Connector. So, it is very important to replace the Engine Wiring Connector with us at equitable prices.
4. Powertrain Control Module - Do you remember when was the last time you got your car Powertrain Control Module checked up? A damaged Powertrain Control Module can cause a lot of issues like displaying P0277 code.
5. Fuel Injection Control Module - Are there some faults in your Fuel Injection Control Module? Don’t waste time and get them replaced or else P0277 code can turn up.

For us our customers are everything, and that’s why we will help you to diagnose P0277 code by mentioning some important symptoms below:

Common Symptoms

• The engine performance might start decreasing
• There can be an increase in the fuel consumption

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Have a look at some ways with which you can correct the P0277 code:

• Make sure that you repair or replace the wiring harness
• If there are some connection issues, then they should be fixed
• The fuel injector cylinder six should be replace properly
• If there are some faults in the engine control module, then it should be replaced immediately

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

• First of all, a scan tool should be used to carefully inspect all the codes which are currently appearing in the vehicle
• Then freeze frame data should be checked for a list of all the codes that were found
• All the codes should be cleared up and the vehicle should be taken out for a test drive under conditions similar to the freeze frame data due to which the P0277 code is appearing
• Carefully check all the constituents of cylinder six injector circuit
• The voltage at the fuel injector should be checked
• Then you should use a scan tool to examine injector six voltage and resistance and then it should be compared to other injectors
• A noid light between the wiring harness should be installed and fuel injector cylinder six to assess pulse width
• Be attentive while testing the engine control module

Common Mistakes When Diagnosing The P0277 Code

• Fuel injection control module failure
• There can be failure in the fuel injector
• There can be defected powertrain control module
• Some issues related to the wiring