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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 1912 (6.7L Diesel - DTCS P24B4-00 To U3017-00 - 2500HD & 3500HD) >> DTC Troubleshooting >> P2BA9-00-NOX EXCEEDENCE - Insufficient REDUCTANT Quality >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    If DTC P207F is present, perform the Diagnostics for that DTC before continuing with this one.

    NOTE:

    If there are any other NOx Sensor or DEF Dosing related DTCs present, perform the Diagnostics for those DTCs before continuing with this one.

    1. Turn the ignition on, engine not running.
    2. Using the scan tool, read DTCs.

      Is this DTC active?

      Yes 

      • Go To  2

      No 

  2. CHECK THE DIESEL EXHAUST FLUID 
    1. Turn the ignition off.
    2. Collect a sample of diesel exhaust fluid from the system.
    3. Visually inspect the fluid for signs of contamination or debris.
      NOTE:

      The Refractometer test is only done to test the general quality of the fluid. It will not identify any specific contaminants that may be present.

    4. Test the quality of the DEF using the DEF/UREA Refractometer (16-5025) available through MoparEssentialTools.com. Then, ENTER EQUIPMENT CATALOG. Or call (855)-298-2687.
      NOTE:

      The DEF should register approximately 32.5 percent using the Refractometer.

    5. To test for hydrocarbons in the DEF tank use Hydroscopic test paper (223-44-863) available through MoparEssentialTools.com. Then, ENTER EQUIPMENT CATALOG. Or call (855)-298-2687. The test strip must come in contact with the DEF fluid in the tank in order to get a valid reading for hydrocarbons present in tank.
    6. Remove the test paper from the package and inspect for color consistency. If the color is not consistent replace strip.
    7. Disconnect the DEF fill pipe from tank and try to get a sample or remove the DEF tank.
    8. Place the test paper directly into the DEF fluid in the tank. If the light blue paper turns dark blue, that is an indication that oil or hydrocarbon contamination is present.

      Is the Diesel Exhaust Fluid (DEF) quality within specification and free of debris, hydrocarbons, or other contamination?

      Yes 

      • Go To  3

      No 

      • If the DEF fails the Refractometer quality test, but passes the Hydroscopic test paper test and shows no other signs of hydrocarbons or other contaminants: Just drain the Diesel Exhaust Fluid (DEF) and replace it with fresh fluid.
      • If the DEF fails the Hydroscopic test paper test or shows signs of other contaminants: Drain the Diesel Exhaust Fluid (DEF). Replace the DEF Tank, DEF Supply Pump Assembly, DEF Injector, DEF Supply Tube, DEF Filler Tube, and DEF Filler Cap in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  3. CHECK FOR DIESEL EXHAUST FLUID LEAK 
    1. Turn the ignition on.
    2. With the scan tool, navigate to Systems Tests and actuate the DEF Prime Test.
      NOTE:

      This will pressurize the system, making a leak easier to see.

    3. Inspect for signs of a Diesel Exhaust Fluid leak at:
      • DEF Injector and Injector connectors.
      • DEF Heater Line.
      • DEF Supply Pump Assembly.

      Were any leaks found?

      Yes 

      • Repair or replace the faulty component in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  4
  4. CHECK THE EXHAUST SYSTEM FOR LEAKS 
    1. Visually inspect the entire exhaust system for signs of a leak.

      Were any exhaust leaks found?

      Yes 

      No 

      • Go To  5
  5. CHECK FOR DEPOSITS IN THE DECOMPOSITION TUBE 
    1. Remove the DEF Injector from the Decomposition Tube. Refer to INJECTOR, DIESEL EXHAUST FLUID, REMOVAL AND INSTALLATION .
    2. Visually inspect the Decomposition Tube for diesel exhaust fluid deposits.

      Were any deposits found?

      Yes 

      No 

      • Go To  6
  6. CHECK THE DEF INJECTOR 
    1. Reconnect the DEF Injector harness connector.
    2. Place the DEF Injector in a clean, graduated cylinder (showing milliliters or cubic centimeters) to capture the fluid sprayed.
    3. Turn the ignition on.
    4. With the scan tool, navigate to Systems Tests and actuate the DEF Reductant Doser PUMP Override Test. This test is not to be confused with the DEF Reductant Doser PRIME Override Test.
      NOTE:

      • This Test will run for six minutes before timing out. The amount of flow may fluctuate through out the test, therefore the test must be allowed to run completely in order for the results to be accurate. The fluid should spray out as a mist. There should be no dripping from the holes in the DEF Injector at any time during the duration of the test procedure.
      • Also, an injector may have white deposits on the tip that would appear to block the holes. These deposits are dry urea, they do not impact the injector performance and will wash off as soon as the injector is actuated. DO NOT replace the injector without running the bucket test first.
      • During testing some residual fluid may collect on the DEF Injector. Do not replace an Injector for that reason alone. Run the entire volume flow test to determine a course of action.

    5. Measure the amount of fluid sprayed after the test times out.

      Does the fluid sprayed measure between 85 ml and 115 ml?

      Yes 

      • Go To  7

      No 

  7. DAMAGED SCR CATALYST 
    NOTE:

    Any upstream failures that resulted in extremely high exhaust temperatures and subsequent SCR catalyst over-temperature DTCs can damage the SCR catalyst and cause this DTC to set.

    1. Check the vehicle repair history for any instances of SCR catalyst over-temperature DTCs P214A, P214B, P214C, or P214D. Also check for any DOC/DPF failures.

      Were there any prior instances of SCR Catalyst over-temperature DTCs or DOC/DPF failures found in the vehicle history?

      Yes 

      No 

  8. CHECK THE DEF SUPPLY LINE FOR A RESTRICTION 
    1. Check the DEF Supply line for a restriction. Starting at the DEF Injector, follow the line to the DEF Supply Pump Assembly looking for kinks or for objects pinching the line.

      Was there a restriction in the DEF Supply Line?

      Yes 

      • Replace the DEF Supply Line in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  9
  9. DEF SUPPLY PUMP 
    1. Turn the ignition off.
    2. Replace the DEF Injector, but do not install the DEF Injector into the decomposition tube.
      NOTE:

      After the DEF Injector is replaced, the Diesel Exhaust Fluid Doser Pump Override Test must be performed again.

    3. Connect the DEF Injector harness to the new DEF Injector.
    4. Place the DEF Injector in a container to capture the fluid sprayed.
    5. Turn the ignition on.
    6. With the scan tool, navigate to Systems Tests and actuate the Diesel Exhaust Fluid Doser Pump Override Test.
      NOTE:

      This Test will run for six minutes before timing out. The amount of flow may fluctuate through out the test, therefore the test must be allowed to run completely in order for the results to be accurate. The fluid should spray out as a mist. There should be no dripping from the holes in the DEF Injector at any time during the duration of the test procedure.

    7. Measure the amount of fluid sprayed after the test times out.

      Is the volume of fluid sprayed still below 85 ml?

      Yes 

      No 

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