Guide To P20AA OBD Error Code Solutions
OBD Code P20AA - Reductant Injection Air Pressure Control Valve Stuck Open
The
trouble code P20AA can be explained as Reductant Injection Air Pressure Control
Valve Stuck Open. 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. The engine
control module, powertrain control module or the transmission control module
monitors this circuit depending upon the particular automobile.
Learn More About OBD Error Code P20AA
If the engine control module would detect a variation in the voltage coming from the reductant injection air pressure control valve that is outside the parameters set by the automobile manufacturer, then it would store the P20AA error code. This would also give rise to the illumination of the check engine light.
What causes this problem with the Reductant Injection Air Pressure Control Valve Stuck Open?
- Some issues related to the reductant injection air pressure control valve
- Unlocked reductant injection air pressure control valve harness
- Unsatisfactory electrical connection in the reductant injection air pressure control valve circuit
- There can be distorted powertrain control module
Replace/Repair These Parts To Fix Code P20AA
- Engine Control Module - There can be some
engine performance issues due to faulty engine control module. If the ECM fails
or has any problems it can lead to performance issues with the vehicle like
misfires, hesitation, loss of power, and sometimes even decreased fuel economy.
- Exhaust Gas Recirculation Valve - Did you just see check engine light flashing on your dashboard? If the computer would detect some fault with the automobile’s EGR valve circuit, then it would set up the check engine light so that the driver is notified about the fault. Don’t waste time and get them replaced or else this fault code can turn up.
- Diesel Exhaust Fluid Pump - The diesel exhaust fluid pump needs to work properly if the transmission system has to perform. If it is not functioning, the transmission may slip and cause harsh shifts too. Thus, replace faulty pump now and buy a new one from us!
- Fuel Injector - Facing
some issues in starting your vehicle? Poor idle issues? Failed emissions? These
are all the symptoms of bad, faulty, leaking and clogged fuel injectors. It
would be a good decision to replace your defective fuel injector with a new one
online.
- Powertrain Control Module -
PCM stands for powertrain control module. It is a car part, a control unit
which is utilized on motor vehicles. It is generally a combined control unit,
consisting of the engine control unit (ECU) and the transmission control unit
(TCU).
- Electronic Control Unit - If your automobile's check engine light remains on constantly, and never goes off, there's a good chance that your vehicle has a damaged electronic control unit. There are a lot of reasons why a car's check engine light will remain on. The most common reason is a defective ECU.
- Diagnostic Tools - It is always advisable to use correct tools and equipment while resolving any OBD code issue as even small mistakes can lead to wrong diagnosis. Thus, always take help from a professional who has the knowledge and experience to such tools in efficient manner. Buy new quality diagnostic tools from us today!
Symptoms Of The OBD Error Code P20AA
There could be countless symptoms which that would accompany with this fault code. Willing to know some common symptoms of OBD Trouble Code P20AA? Your wish is our demand. Have a look at them below:
Common Symptoms
- Check engine light might come into signal
- Diminishing fuel efficiency
- A lot of black smoke might start emitting from the automobile’s exhaust
- Declining engine performance
How To Correct Reductant Injection Air Pressure Control Valve Stuck Open Issue
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:
- Replacing damaged connectors, terminals, or wiring
- Repair or replace the quirky reductant injection air pressure control valve
- Rehabilitate the defaults in the wiring harness
- Rehabilitate the defaults in the reductant injection air pressure control valve harness
- Carefully adjust the faults in the reductant injection air pressure control valve
Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of PCM, reductant injection air pressure control valve, diesel exhaust fluid, exhaust system parts, diesel particulate filter, def fluid, dpf system parts and a lot more. We are sure that now all your issues would be resolved.
Easy Diagnosis Of Engine Error OBD Code P20AA
It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P20AA code to be stored:
- 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.
- Most often he has to inspect the reductant injection air pressure control valve itself to see if they are faulty or damaged. Additional error codes that are stored in the vehicle are also addressed.
- The mechanic performs a continuity test between the PCM and solenoid to check the resistance.
- If the solenoid or the control modules are not faulty, he will then retune the code and test drive the vehicle.
- On test driving, if the P20AA code does not return soon, he will know that an erratic condition exits.
- But if the error returns instantaneously, he will check every components of the control module as well as the circuit like connectors, wires, harness, fuses etc for any possible fault.
- If any component is damaged, he will fix them right away.
- After performing this repair, he will inspect the reductant injection air pressure control valve circuit as well.
- Every time a repair work is carried out, make sure that the mechanic test drives the vehicle after every repair so that the diagnosis is successful. This can eventually help him to know as to where the error occurred.
Common Mistakes When Diagnosing The P20AA Code
- Malfunctioning powertrain control module
- There can be a failure in the reductant injection air pressure control valve
- Wiring problems