Guide To P20BA OBD Error Code Solutions
OBD Code P20BA - Reductant Heater A Control Circuit Performance
The
trouble code P20BA can be explicated as Reductant Heater A Control Circuit
Performance. 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.
Learn More About OBD Error Code P20BA
It is the powertrain control module which would examine the reductant heater A control circuit. This trouble code would be set by the PCM when the reductant heater A control circuit would not be as per the parameters set by the manufacturer.
What causes this problem with the Reductant Heater A Control Circuit Performance?
- Damaged reductant heater
- Imperfect reductant temperature sensor
- Issue of unbolted wiring in the reductant heater control circuit
- There can be distorted SCR controller/PCM or programming error
Replace/Repair These Parts To Fix Code P20BA
- Exhaust Gas
Recirculation Valve - The most common symptoms of an issue with the vehicle’s
EGR valve is a rough idle. It is not uncommon for EGR valves to malfunction and
become stuck in the open position. Poor EGR valve can cause a lot of
difficulties, so why not get it replaced at time?
- Engine Control
Module - ECM failures and faults can be very
difficult to find and resolve as these are very rare and might require a
complete reprogramming of the system to avoid wrong codes from getting stored
in the system, leading to misdiagnosis. Replace it now!
- Powertrain Control
Module - Faulty PCM can disrupt the normal
functioning of the vehicle by affecting the transmission system and the fuel
delivery system. This will cause the system to store wrong OBD error and thus
can lead to misdiagnosis.
- Diesel Exhaust
Fluid Heater - If the diesel exhaust fluid heater is
faulty, it will not be able to aid in conversion of harmful nitrous oxide
compounds to nitrogen, carbon dioxide and water vapours to control emissions.
Thus, replace it immediately.
- Diagnostic Tools - Take help of a professional mechanic to diagnose OBD code error. Use high grade
diagnostic tools to resolve this issue. Buy new tools and equipment from us!
- Fuel Injector - Bad fuel injectors can cause starting issues, poor idles and affected
performance. Thus, the replacements are in order. Buy new fuel injectors now!
- Diesel Exhaust Fluid Pump - Faulty DEF pump can lead to increased emission and affected vehicle performance. It can also hamper the fuel economy and the power output of the vehicle. Thus, replace faulty DEF pump now!
Symptoms Of The OBD Error Code P20BA
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 P20BA here:
Common Symptoms
- Visibility in the check engine light
- Decrease in the overall fuel efficiency
- There might be a lot of black smoke coming out from vehicle exhaust
- The engine performance might start declining
- Storage of some SCR related codes
How To Correct P20BA Reductant Heater A Control Circuit Performance
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 P20BA:
- The malfunctioning reductant heater should be repaired or replaced as per the need
- It is necessary to perform proper service of the unsound reductant heater control circuit
- Adjust the flawed reductant heater control pump
- Repair or replace the loose, broken or corroded wiring
- Rehabilitate the defaults in the fuel injector
- You must fix the defective or corroded connectors
- Make sure to mend the faulty exhaust system parts
- Carefully adjust the faults in the reductant heater sensor
- Recondition the non-functioning terminals
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Easy Diagnosis Of Engine Error OBD Code P20BA
If you want to easily diagnose this trouble code, then you must follow the steps which are mentioned here as below:
Make use of a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of vehicle specific diagnostic information to diagnose OBD code P20BA.
Begin the diagnosis by visually inspecting the reductant heater system harnesses and connectors. Repair or replace burnt or damaged wiring and or connectors before doing any further diagnosis.
Plug the scanner into the vehicle diagnostic connector and retrieve all stored codes and pertinent freeze frame data. Note this information down before clearing the fault codes. Make the PCM to go into readiness mode or reset the code by test driving the vehicle.
If the PCM enters readiness mode, the code is intermittent and will be difficult to diagnose. If the code gets reset immediately, start searching for the correct information source to get diagnostic flow charts, connector pin-out charts as well as constituent testing procedures and specifications.
Test (voltage drop) the power supply to the SCR control system using a DVOM. Check fuses with the circuit loaded to avoid misdiagnosis. With the help of the scanner, activate the reductant heater and test output control circuit voltage, if the power battery voltage and ground circuit are discovered appropriately.
There are chances that the controller is bad or has experienced a programming error, if the voltage is insufficient. If the voltage output circuit is within parameters, use the DVOM and test the SCR control system. If the heater does not meet manufacturer’s specifications, then it might have failed and shall be replaced.
Common Mistakes When Diagnosing The P20BA Code
- Glow plug control module related issues
- Quirks in the reductant tank heater
- Issues related with the car wiring