Guide To P2057 OBD Error Code Solutions

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The trouble code P2057 can be described as Reductant Injection Valve Circuit Low Bank 2 Unit 2. The main role of the reductant injector is to lower the noxious gases which are being expelled via the diesel particulate filter (diesel engines) or catalytic converter. Bank 2 here would indicate the bank of the engine which contains the number two cylinder. This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model. This would also give rise to the illumination of the check engine light.

The P2057 fault code would start appearing if the PCM has detected a malfunction in the reductant injection valve circuit. The Reductant Injection Valve) is generally utilized to meter and atomize the reductant liquid before it is mixed with the exhaust gas. Its normal operating frequency is between 3 Hz and .3 Hz.

What causes this problem with the Reductant Injection Valve Circuit Low Bank 2 Unit 2?

• There can be inoperative reductant injection valve
• Problems related to unbolted reductant injection valve control circuit
• The DEF in the reservoir might not be sufficient
• Imperfect SCR controller/PCM or programming error

We care for our customers and that’s why we can totally understand your problem. That’s the reason why we have listed out some major symptoms behind the flashing up of OBD Code P2057. They are mentioned here as follows:

Common Symptoms

• Check engine light can start flashing up
• Bad engine performance
• Reduction in the overall fuel efficiency
• Storage of some other SCR codes

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 P2057:

• It is essential to restore the flawed reductant injection valve
• Repair or replace the quirky powertrain control module
• Rehabilitate the defaults in the reductant injection valve control circuit
• Carefully adjust the faults in the SCR controller
• Recondition the non-functioning PCM or programming error

Now are you thinking that from where will you purchase these car parts? You have arrived at the right place. We at Parts Avatar care for our customers, that’s why we provide best quality of catalytic converter, pcm, oxygen sensor, exhaust system, air pressure sensor, reductant injector valve, dpf filter at marketable prices.

Do you wish to diagnose P2057 error code easily? Here are some steps which you should follow in order to diagnose this fault code:

• The mechanic or the technician will use a diagnostic scanner or code reader like DVOM to visually scan for the error codes in the vehicle. After performing a careful inspection, every of the stored codes and freeze frame data are retrieved as it can help down the way for further diagnosis process. Then the process of diagnosis should start.
• The mechanic should visually inspect the reductant heater system harnesses as well as connectors. Then the mechanic has to check the wires, connectors and other electrical components and quickly replace them if he finds them to be damaged or defective. After that all the stored codes as well as freeze frame data should be retrieved. This information should be written down before clearing the codes and then the vehicle should be take out for a test drive unless and until the powertrain control module would enter the readiness mode or the code is reset.
• Now if the PCM enters readiness mode, then it would that this code is intermittent and might be very difficult to diagnose it. If this is the real case, then you should allow the conditions which have given contribution in storing this code to worsen before the correct diagnosis can be made. Carefully reset the code and then the source of vehicle information to get diagnostic flow charts, connector pin out charts, connector face views, as well as component testing procedures and specifications should be searched.
• This information would be very helpful in completing the next step of your diagnosis. The DVOM should be used to check the power supply to the SCR control system. The fuses with the circuit loaded should be inspected so that the misdiagnosis can be avoided. Now if the right power (battery voltage) and ground circuits have been located, then a scanner should be used to activate the reductant injector valve and check the output control circuit voltage. Then if the voltage is not sufficient, then it would that there are some faults in the controller or it might have faced a programming error.
• If the voltage output circuit is as per the parameters set by the manufacturer, then DVOM should be used to check the reductant injection valve. If the valve is not as per the specifications set by the manufacturer, then it would mean that it has a failure. It is very important to replace it. Now when the car is taken out for a test drive, if the P2057 code does not return soon, he will know that there is an existence of erratic condition.

Common Mistakes When Diagnosing The P2057 Code

• Many a times the mechanic might not know the difference between the oxygen sensor and the exhaust gas temperature sensor as both of them look same and he might replace the wrong sensor, giving rise to more problems. It would also not lead to a successful diagnosis.