Error Code P20DD: What It Means & What To Do?
OBD Code P20DD - Exhaust Aftertreatment Fuel Pressure Sensor Circuit
The
trouble code P20DD can be defined as Exhaust Aftertreatment Fuel Pressure
Sensor Circuit. Is the car engine not performing as per the expectations? Are
you noticing affected fuel economy, increased emissions from the tailpipe and
Check Engine Light illuminated on the dashboard? This can be an indication of
the problem with the exhaust gas temperature sensor of the vehicle, resulting
in OBD code P20DD getting stored in the powertrain control module (PCM).
Learn More About OBD Error Code P20DD
It is the
engine control module which would examine the fuel supply control circuit for
the exhaust after treatment system. This trouble code would be set by the ECM
when the fuel supply control circuit for the exhaust after treatment system
would not be as per the parameters set by the manufacturer.
What causes this problem with the Exhaust Aftertreatment Fuel Supply Control Circuit High?
- Damaged EAS fuel pressure sensor
- Imperfect EAS fuel supply pump
- Issue of unbolted wiring in the EAS fuel supply control circuit
- The DEF in the EAS reservoir might not be sufficient
- There can be distorted EAS controller/PCM or programming error
Replace/Repair These Parts To Fix Code P20DD
- Engine Control Module
- Most of the time it is difficult to intercept the ECM faults and thus must be
checked for thoroughly. There can be a problem with the circuit or the software
might have malfunctioned. Thus repair, replace or reprogram the component as
per requirement
- Automatic Transmission Module – Sometime the transmission module is unable to
communicate or correctly anticipate the speed of the vehicle and thus creates
difficulty in gear shift leading to sluggish acceleration, throttle response
and stalling. Thus can also hamper a lot of components physically and thus must
be check for and replaced, if required.
- Fuel Injector – The
fuel injectors are important component of the fuel delivery system that helps
in proper utilization of the fuel entering the engine. This not only helps in
taking care of the air to fuel ratios in the engine, helping the combustion
process but also enhances the performance. Thus, replace faulty injector now!
- Powertrain Control Module - If the PCM is faulty, it can stores wrong OBD codes and
can lead to misdiagnosis. This can happen due to misinterpretation of data
received from the various sensors and components which also affects the
vehicle’s performance. Thus replace it immediately.
- Exhaust Gas Recirculation Valve -It is auto part commonly found on many
road going automobiles. It is a part of the vehicle’s exhaust gas recirculation
(EGR) system, an emissions system that is designed to recirculate exhaust gases
back into the vehicle’s intake so that it can reduce cylinder temperatures and
NOx emissions. Purchase top notch exhaust gas recirculation valve from us at economical prices.
- Electronic Control Unit – If the ECU is at fault, it will not be able to read the
boost converter temperatures correctly leading to underperformance. Thus,
replace faulty ECU now!
- Diagnostic Tool- Choose from our diagnostic tools
collection that will come handy to detect and correct the OBD error code.
Symptoms Of The OBD Error Code P20DD
Our main motive is to achieve customer satisfaction as for us our customers are everything and that’s why we will help you to diagnose P20DD code by mentioning some major symptoms below:
Common Symptoms
- The engine performance might be reduced
- Diminishing fuel mileage
- Excessive black smoke might start emitting from automobile exhaust
- There might be some other EAS/SCR related codes
How To Correct P20DD Exhaust Aftertreatment Fuel Pressure Sensor Circuit Issue
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 P20DD:
- Carefully adjust the faults in the exhaust aftertreatment fuel pressure sensor
- Adjust the flawed exhaust aftertreatment fuel pressure sensor harness
- Bad exhaust aftertreatment fuel pressure sensor circuit replacement
- Faulty wiring and connector repairs
- Powertrain control module repair and reprogramming
However, if you face any issue then we have stocked a wide range of best priced fuel injector, pump assembly, ECM, fuel pressure sensor, pressure sensor circuit, EAS, SCR, PCM, oil pressure sensor, ecm module, pcm module and more to help you out in fixing your car.
Easy Diagnosis Of Engine Error OBD Code P20DD
Here are some steps which you should follow in order to diagnose this fault code:
- Take the help of an experienced mechanic who will visually inspecting the exhaust system, searching primarily for the leak. Since the leak is considered a significant one, it should be fairly easy to locate.
- Find and freeze frame data with the code. Then, clear the code and take the vehicle on a test drive under the same conditions.
- If the code reappears, perform a visual inspection of the EAS wiring harnesses and connectors.
- 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 EAS fuel supply using a DVOM. Check fuses with the circuit loaded to avoid misdiagnosis. With the help of the scanner, activate the EAS fuel pressure sensor (solenoid) 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 EAS fuel pressure sensor. If the injector does not meet manufacturer’s specifications, then it might have failed and shall be replaced.
Common Mistakes When Diagnosing The P20DD Code
- Non performance of the exhaust aftertreatment fuel pressure sensor
- Failure in the car wiring
- The powertrain control module might not function properly