Scania EMD DTC 5853 SCR system

EMD EMD control unit · Scania · 2 variants

Code 5853 (decimal). Some diagnostic tools show it in hexadecimal as 16DD.

In short

Reductant volume adaptation has reached the maximum end position.

Variant 1

Applies to: EMD0

What does Scania EMD fault code 5853 mean?

Reductant volume adaptation has reached the maximum end position.

What causes Scania DTC 5853?

- Poor quality or low concentration of reductant. - Blocked catalytic converter. - Fault in the measurement of the gas flow. - Reductant doser V117 blocked. - Fault in NOx sensor T115 or T131. - Exhaust gas leakage between the reductant doser and silencer.

How does the system react?

The fault affects the engine's emissions of nitrogen oxides. Depending on the emission class, it will result in torque reduction, speed limitation and a warning indication.

How to fix Scania EMD fault code 5853?

  1. Check that the NOx sensor is correctly fitted.
  2. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  3. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  4. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  5. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  6. Visually check that the SCR catalytic converter is not damaged.
  7. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  8. Run Visual check of urea deposits.
  9. If there is a blockage in the mixing chamber:
  10. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  11. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  12. This wizard burns off any urea deposits in the mixing chamber.
  13. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  14. Check that the fault code has been deactivated and clear the fault code.
  15. Proceed as follows to extinguish the emissions warning lamp.
  16. Turn the starter key to the locking position.
  17. Wait until the button for the hazard warning signal has been extinguished.
  18. Turn the starter key to the drive position.
  19. Check that the fault code has been deactivated.
  20. Turn the starter key to the drive position and then back to the locking position 3 times.
  21. Wait until the button for the hazard warning signal has extinguished between each turn.
  22. The emissions warning lamp should then be extinguished.
  23. Clear the fault code.
  24. Check the NOx sensors.
  25. Check that the NOx sensors upstream and downstream of the SCR catalytic converter have not been mixed up.
  26. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  27. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  28. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  29. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  30. Visually check that the SCR catalytic converter is not damaged.
  31. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  32. Run Visual check of urea deposits.
  33. If there is a blockage in the mixing chamber:
  34. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  35. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  36. This wizard burns off any urea deposits in the mixing chamber.
  37. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  38. Check that the fault code has been deactivated and clear the fault code.
  39. Check the NOx sensors and ensure that they have not been confused.
  40. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  41. Check that the reductant tank contains reductant of the correct quality.
  42. Run Checking reductant quality.
  43. Check that there is no blockage in the reductant lines or in the injection nozzle.
  44. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Troubleshooting wizard.
  45. Check that the reductant doser is metering the correct amount of reductant.
  46. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  47. Visually check that the SCR catalytic converter is not damaged.
  48. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  49. Run Visual check of urea deposits.
  50. If there is a blockage in the mixing chamber:
  51. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  52. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  53. This wizard burns off any urea deposits in the mixing chamber.
  54. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  55. Check that the fault code has been deactivated and clear the fault code. |
  56. Check that the NOx sensor is correctly fitted.
  57. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  58. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  59. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  60. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  61. Visually check that the SCR catalytic converter is not damaged.
  62. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  63. Run Visual check of urea deposits.
  64. If there is a blockage in the mixing chamber:
  65. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  66. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  67. This wizard burns off any urea deposits in the mixing chamber.
  68. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  69. Check that the fault code has been deactivated and clear the fault code.
  70. Proceed as follows to extinguish the emissions warning lamp.
  71. Turn the starter key to the locking position.
  72. Wait until the button for the hazard warning signal has been extinguished.
  73. Turn the starter key to the drive position.
  74. Check that the fault code has been deactivated.
  75. Turn the starter key to the drive position and then back to the locking position 3 times.
  76. Wait until the button for the hazard warning signal has extinguished between each turn.
  77. The emissions warning lamp should then be extinguished.
  78. Clear the fault code. |
  79. Check the NOx sensors.
  80. Check that the NOx sensors upstream and downstream of the SCR catalytic converter have not been mixed up.
  81. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  82. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  83. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  84. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  85. Visually check that the SCR catalytic converter is not damaged.
  86. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  87. Run Visual check of urea deposits.
  88. If there is a blockage in the mixing chamber:
  89. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  90. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  91. This wizard burns off any urea deposits in the mixing chamber.
  92. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  93. Check that the fault code has been deactivated and clear the fault code. |
  94. Check the NOx sensors and ensure that they have not been confused.
  95. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  96. Check that the reductant tank contains reductant of the correct quality.
  97. Run Checking reductant quality.
  98. Check that there is no blockage in the reductant lines or in the injection nozzle.
  99. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Troubleshooting wizard.
  100. Check that the reductant doser is metering the correct amount of reductant.
  101. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  102. Visually check that the SCR catalytic converter is not damaged.
  103. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  104. Run Visual check of urea deposits.
  105. If there is a blockage in the mixing chamber:
  106. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  107. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  108. This wizard burns off any urea deposits in the mixing chamber.
  109. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  110. Check that the fault code has been deactivated and clear the fault code.

Variant 2

Applies to: EMD1

Detection

Reductant volume adaptation has reached the maximum end position.

Possible cause

- Poor quality or low concentration of reductant. - Blocked catalytic converter. - Fault in the measurement of the gas flow. - Reductant doser V117 blocked. - Fault in NOx sensor T115 or T131. - Exhaust gas leakage between the reductant doser and silencer.

System reaction

The fault affects the engine's nitrous oxide emissions. Depending on the emission class, it will result in torque reduction, speed limitation and a warning indication.

How to fix

  1. Check that the NOx sensor is correctly fitted.
  2. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  3. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  4. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  5. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  6. Visually check that the SCR catalytic converter is not damaged.
  7. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  8. Run Visual check of urea deposits.
  9. If there is a blockage in the mixing chamber:
  10. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  11. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  12. This wizard burns off any urea deposits in the mixing chamber.
  13. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  14. Check that the fault code has been deactivated and clear the fault code.
  15. Proceed as follows to extinguish the emissions warning lamp.
  16. Turn the starter key to the locking position.
  17. Wait until the button for the hazard warning signal has been extinguished.
  18. Turn the starter key to the drive position.
  19. Check that the fault code has been deactivated.
  20. Turn the starter key to the drive position and then back to the locking position 3 times.
  21. Wait until the button for the hazard warning signal has extinguished between each turn.
  22. The emissions warning lamp should then be extinguished.
  23. Clear the fault code.
  24. Check the NOx sensors.
  25. Check that the NOx sensors upstream and downstream of the SCR catalytic converter have not been mixed up.
  26. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  27. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  28. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  29. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  30. Visually check that the SCR catalytic converter is not damaged.
  31. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  32. Run Visual check of urea deposits.
  33. If there is a blockage in the mixing chamber:
  34. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  35. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  36. This wizard burns off any urea deposits in the mixing chamber.
  37. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  38. Check that the fault code has been deactivated and clear the fault code.
  39. Check the NOx sensors and ensure that they have not been confused.
  40. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  41. Check that the reductant tank contains reductant of the correct quality.
  42. Run Checking reductant quality.
  43. Check that there is no blockage in the reductant lines or in the injection nozzle.
  44. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Troubleshooting wizard.
  45. Check that the reductant doser is metering the correct amount of reductant.
  46. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  47. Visually check that the SCR catalytic converter is not damaged.
  48. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  49. Run Visual check of urea deposits.
  50. If there is a blockage in the mixing chamber:
  51. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  52. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  53. This wizard burns off any urea deposits in the mixing chamber.
  54. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  55. Check that the fault code has been deactivated and clear the fault code. |
  56. Check that the NOx sensor is correctly fitted.
  57. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  58. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  59. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  60. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  61. Visually check that the SCR catalytic converter is not damaged.
  62. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  63. Run Visual check of urea deposits.
  64. If there is a blockage in the mixing chamber:
  65. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  66. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  67. This wizard burns off any urea deposits in the mixing chamber.
  68. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  69. Check that the fault code has been deactivated and clear the fault code.
  70. Proceed as follows to extinguish the emissions warning lamp.
  71. Turn the starter key to the locking position.
  72. Wait until the button for the hazard warning signal has been extinguished.
  73. Turn the starter key to the drive position.
  74. Check that the fault code has been deactivated.
  75. Turn the starter key to the drive position and then back to the locking position 3 times.
  76. Wait until the button for the hazard warning signal has extinguished between each turn.
  77. The emissions warning lamp should then be extinguished.
  78. Clear the fault code. |
  79. Check the NOx sensors.
  80. Check that the NOx sensors upstream and downstream of the SCR catalytic converter have not been mixed up.
  81. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  82. Check that the reductant tank contains reductant of the correct quality; run Checking the reductant quality.
  83. Check for blockages in the reductant hoses or injection nozzle by running system tests and the troubleshooting guide for the SCR system: Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system.
  84. Check that the reductant doser is metering the correct volume of reductant by running a metering test under Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  85. Visually check that the SCR catalytic converter is not damaged.
  86. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  87. Run Visual check of urea deposits.
  88. If there is a blockage in the mixing chamber:
  89. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  90. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  91. This wizard burns off any urea deposits in the mixing chamber.
  92. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  93. Check that the fault code has been deactivated and clear the fault code. |
  94. Check the NOx sensors and ensure that they have not been confused.
  95. Check for other fault codes related to the engine or exhaust gas aftertreatment system and in that case start with them.
  96. Check that the reductant tank contains reductant of the correct quality.
  97. Run Checking reductant quality.
  98. Check that there is no blockage in the reductant lines or in the injection nozzle.
  99. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Troubleshooting wizard.
  100. Check that the reductant doser is metering the correct amount of reductant.
  101. Run Exhaust gas aftertreatment, troubleshooting the liquid components of the SCR system > Metering test.
  102. Visually check that the SCR catalytic converter is not damaged.
  103. Visually check whether the mixing chamber for the reductant is blocked or damaged by urea deposits.
  104. Run Visual check of urea deposits.
  105. If there is a blockage in the mixing chamber:
  106. Run Internal cleaning of the silencer and follow the instructions for rectifying urea deposits.
  107. Run Exhaust gas aftertreatment, checking and rectification of urea deposit.
  108. This wizard burns off any urea deposits in the mixing chamber.
  109. Verification Verify that the fault is rectified by running Exhaust gas aftertreatment, function test SCR.
  110. Check that the fault code has been deactivated and clear the fault code.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

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