Error Code P209E: What It Means & What To Do?
OBD CODE P209E - Reductant Injection Air Pressure Sensor A/”B” Correlation
Is your Car’s Check
Engine Light illuminating on the dashboard? Do you find sudden decrease in the
fuel economy? And is the car engine running rough with black smoke coming from
tailpipe? This might be the indication of problems with the reductant injection
air pressure sensor of the car which in other words can be an OBD P209E error.
OBD code P209E means
Reductant Injection Air Pressure Sensor A/”B” Correlation Issue.
Learn More About OBD Error Code P209E
A stored code P209E means that the powertrain control module (PCM) has detected a correlation problem between the reductant injection air pressure sensors A and B circuits. This system uses multiple pressure sensors. Refer to a model specific service manual to determine which is the "A" and/or "B" circuit.
If the PCM detects a voltage correlation problem in the reductant injection air pressure sensors A and B circuits, a code P209E will be stored and a malfunction indicator lamp (MIL) may be illuminated. Multiple ignition cycles - with a failure - may be required for MIL illumination.
What causes this problem with the Reductant Injection Air Pressure Sensor A/”B” Correlation?
- Reductant Injection Air Pressure Sensor problematic
- Reductant Injection Air Pressure Sensor wiring and connector issue
- Reductant Injection Air Pressure Sensor circuit problems
- SCR controller/PCM faults
Replace/Repair These Parts To Fix Code P209E
- 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.
- 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!
- Exhaust Gas Recirculation Valve - If the PCM detects any fault in the vehicle’s EGR valve circuit, it will set up the check engine light so that the driver is notified about the fault. Properly check for the EGR valve faults leading to this OBD code getting stored in the system. Get the faulty EGR valve replaced or else this fault code can turn up.
- 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 P209E
Willing to know some common symptoms of OBD Code P209E? Your wish is our demand. Have a look at them below
Common Symptoms
- Reduced/abnormal engine performance
- Affected fuel efficiency
- Lean exhaust codes
- Increased emissions from the tailpipe
How To Correct Reductant Injection Air Pressure Sensor A/”B” Correlation
Want to correct the Trouble Code P209E? Read these points mentioned below:
- Bad Reductant Injector Air Pressure Sensor replacement
- Diesel Exhaust Fluid Pump replacement
- ERG valve replacement
- Faulty wiring and connector repairs
- Powertrain Control Module repair and reprogramming
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 Reductant Injection Air Pressure Sensor, SCR controller, Powertrain Control Module (PCM) and many more. Now all your problems would vanish within no time.
Easy Diagnosis Of Engine Error OBD Code P209E
Here are some steps which you should follow in order to diagnose this P209E fault code:
- Take the help of an experienced mechanic who will visually inspecting the exhaust system.
- 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 components and its wiring.
- If the wiring is okay, the injector itself will be tested to confirm operation.
- The mechanic will repair or replace faults in relation to the reductant injection air pressure sensor, DEF pump and EGR valve. Also check for any wiring and harness issues and correct the damaged wirings.
- If there is no problem found, check for the faulty ECU. Although, this fault is very rare but can be a reason for problematic exhaust system, thus hampering the engine performance. The ECU needs to be replaced in such condition and has to be reprogrammed to erase any stored faulty error.
Common Mistakes When Diagnosing the P209E Code
- Powertrain Control Module (PCM) faulty
- Reductant air pressure sensor issue
- Wiring and connector issue