Error Code P2053: What It Means & What To Do?

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 reductant injection valve circuit is being monitored by the engine control module. This trouble code would be set by the ECM when the reductant injection valve circuit would not be as per the specifications set by the manufacturer.

What causes this problem with the Reductant Injection Valve Circuit/Open Bank 1 Unit 2?

• There can be inoperative reductant injection valve
• The reductant injection valve control circuit might be unlocked
• Too little DEF in the reservoir
• Malfunctioning SCR controller/PCM or programming error

1. 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.
2. 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.
3. Exhaust Gas Recirculation Valve – Bad EGR valve can cause many performance issues. Common signs include engine performance issues like decreased power and acceleration, rough idle, and the Check Engine Light coming on. Thus, replace faulty EGR valve now!
4. Diesel Exhaust Fluid Pump – If the DEF pump will not function properly, it can cause increased emissions in the exhaust system and reduced the longevity of the filtration elements in the exhaust system. Thus, replace faulty pump immediately.
5. 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?
6. Diagnostic Tools – Use factory grade diagnostic tools to resolve OBD code P2053 error. Buy new diagnostic tools and equipment for us.

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

• Visibility in the check engine light
• The engine performance might be reduced
• Too much black smoke from vehicle exhaust
• Diminishing fuel mileage
• Appearance of some other SCR related code

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:

• Repair or replace the quirky ECM
• You must fix the defective SCR controller/PCM or programming error
• It is essential to restore the flawed reductant injection valve control circuit
• The reductant injection valve should be restored to working order

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of catalytic converter, pcm, oxygen sensor, exhaust system, air pressure sensor, reductant injector valve, dpf filter and many more. Now all your problems would vanish within no time.

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

After verifying the P2053 code with an OBD-II scanner, the mechanic should begin with a visual inspection of all electrical components. 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.

Common Mistakes When Diagnosing The P2053 Code

• Sometimes 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.
• Most mechanics simply neglect to examine the wiring, connectors and terminals for damage.