KC-2107
Service Bulletin Details
Public Details for: KC-2107
Def level (uqls) sensor troubleshooting guide - us17+obd16 emissions and newer
- 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 - 2006 - 2005 - 2004 - 2003 - 2002 - 2001 - 2000 - 1999 - 1998 - 1997 - 1996 - 1995 - 1994 - 1993 - 1992 - 1991 - 1990 - 1989 - 1988 - 1987 - 1986 - 1985 - 1984 - 1983 - 1982 - 1981 - 1980 - 1979 - 1978 - 1977 - 1976 - 1975 - 1974 -
Models from 2019
2019 VOLVO VAH |
2019 VOLVO VHD |
2019 VOLVO VN |
2019 VOLVO VNL |
2019 VOLVO VNM |
2019 VOLVO VNR |
2019 VOLVO VNX |
Models from 2018
2018 VOLVO VAH |
2018 VOLVO VHD |
2018 VOLVO VN |
2018 VOLVO VNL |
2018 VOLVO VNM |
2018 VOLVO VNR |
2018 VOLVO VNX |
Models from 2017
2017 VOLVO VAH |
2017 VOLVO VHD |
2017 VOLVO VN |
2017 VOLVO VNL |
2017 VOLVO VNM |
2017 VOLVO VNR |
2017 VOLVO VNX |
Models from 2016
2016 VOLVO 780 |
2016 VOLVO VAH |
2016 VOLVO VHD |
2016 VOLVO VN |
2016 VOLVO VNL |
2016 VOLVO VNM |
2016 VOLVO VNX |
2016 VOLVO VT |
Models from 2015
2015 VOLVO VAH |
2015 VOLVO VHD |
2015 VOLVO VN |
2015 VOLVO VNL |
2015 VOLVO VNM |
2015 VOLVO VNX |
2015 VOLVO VT |
Models from 2014
2014 VOLVO VAH |
2014 VOLVO VHD |
2014 VOLVO VN |
2014 VOLVO VNL |
2014 VOLVO VNM |
2014 VOLVO VNX |
2014 VOLVO VT |
Models from 2013
2013 VOLVO VAH |
2013 VOLVO VHD |
2013 VOLVO VN |
2013 VOLVO VNL |
2013 VOLVO VNM |
2013 VOLVO VNX |
2013 VOLVO VT |
2013 VOLVO WHEB |
Models from 2012
2012 VOLVO VAH |
2012 VOLVO VHD |
2012 VOLVO VN |
2012 VOLVO VNL |
2012 VOLVO VNM |
2012 VOLVO VT |
Models from 2011
2011 VOLVO 780 |
2011 VOLVO VAH |
2011 VOLVO VH |
2011 VOLVO VHD |
2011 VOLVO VN |
2011 VOLVO VNL |
2011 VOLVO VNM |
2011 VOLVO VT |
Models from 2010
2010 VOLVO VAH |
2010 VOLVO VH |
2010 VOLVO VHD |
2010 VOLVO VN |
2010 VOLVO VNL |
2010 VOLVO VNM |
2010 VOLVO VT |
Models from 2009
2009 VOLVO VAH |
2009 VOLVO VH |
2009 VOLVO VHD |
2009 VOLVO VN |
2009 VOLVO VNL |
2009 VOLVO VNM |
2009 VOLVO VT |
Models from 2008
2008 VOLVO VAH |
2008 VOLVO VH |
2008 VOLVO VHD |
2008 VOLVO VN |
2008 VOLVO VNL |
2008 VOLVO VNM |
2008 VOLVO VT |
Models from 2007
2007 VOLVO VAH |
2007 VOLVO VH |
2007 VOLVO VHD |
2007 VOLVO VN |
2007 VOLVO VNL |
2007 VOLVO VNM |
2007 VOLVO VT |
Models from 2006
2006 VOLVO VH |
2006 VOLVO VHD |
2006 VOLVO VN |
2006 VOLVO VNL |
2006 VOLVO VNM |
2006 VOLVO VT |
Models from 2005
2005 VOLVO 660 |
2005 VOLVO VH |
2005 VOLVO VHD |
2005 VOLVO VHD84B |
2005 VOLVO VN |
2005 VOLVO VNL |
2005 VOLVO VNM |
2005 VOLVO VT |
Models from 2004
2004 VOLVO 780 |
2004 VOLVO VH |
2004 VOLVO VHD |
2004 VOLVO VHD84B |
2004 VOLVO VN |
2004 VOLVO VNL |
2004 VOLVO VNL430 |
2004 VOLVO VNL64T |
2004 VOLVO VNM |
2004 VOLVO VT |
2004 VOLVO WX |
2004 VOLVO WXLL |
Models from 2003
2003 VOLVO FM |
2003 VOLVO VH |
2003 VOLVO VHD |
2003 VOLVO VHD84B |
2003 VOLVO VN |
2003 VOLVO VNL |
2003 VOLVO VNM |
2003 VOLVO VT |
2003 VOLVO WX |
2003 VOLVO WXLL |
Models from 2002
Models from 2001
Models from 2000
Models from 1999
Models from 1998
Models from 1997
Models from 1996
Models from 1995
Models from 1994
Models from 1993
Models from 1992
Models from 1991
Models from 1990
Models from 1989
Models from 1988
Models from 1987
1987 VOLVO F7 SERIES |
1987 VOLVO FE6 |
1987 VOLVO FE7 |
1987 VOLVO N10 |
1987 VOLVO N12 |
1987 VOLVO VOLVO TRUCK |
Models from 1986
1986 VOLVO B10M |
1986 VOLVO F7 SERIES |
1986 VOLVO FE6 |
1986 VOLVO FE7 |
1986 VOLVO N10 |
1986 VOLVO N12 |
1986 VOLVO VOLVO TRUCK |
Models from 1985
Models from 1984
Models from 1983
Models from 1982
Models from 1981
1981 VOLVO 614 |
1981 VOLVO F6 SERIES |
1981 VOLVO F611 |
1981 VOLVO F613 |
1981 VOLVO VOLVO TRUCK |
Models from 1980
1980 VOLVO 614 |
1980 VOLVO F SERIES |
1980 VOLVO F611 |
1980 VOLVO F613 |
1980 VOLVO F716 |
1980 VOLVO VOLVO TRUCK |
1980 VOLVO VOLVO WHITE |
Models from 1979
1979 VOLVO 614 |
1979 VOLVO F SERIES |
1979 VOLVO F611 |
1979 VOLVO F613 |
1979 VOLVO F716 |
1979 VOLVO VOLVO TRUCK |
1979 VOLVO VOLVO WHITE |
Models from 1978
1978 VOLVO 614 |
1978 VOLVO F611 |
1978 VOLVO F613 |
1978 VOLVO F86 |
1978 VOLVO VOLVO TRUCK |
1978 VOLVO VOLVO WHITE |
Models from 1977
1977 VOLVO 614 |
1977 VOLVO F611 |
1977 VOLVO F613 |
1977 VOLVO F86 |
1977 VOLVO VOLVO TRUCK |
Models from 1976
1976 VOLVO F86 |
Models from 1975
1975 VOLVO F86 |
Models from 1974
1974 VOLVO F86 |
6/1/22, 4:22 PM Article DEF Level (UQLS) Sensor Troubleshooting Guide US17+OBD16 Emissions and Newer Internal Content Overview The Urea Quality Level Sensor (UQLS) is a smart sensor that is located in the top of the Urea (DEF) Tank, commonly referred to as the DEF Level Sensor or Combined Tank Unit. This smart sensor has Urea Quality, Level, and Temperature all integrated into it as one unit and reports on the DL7 (J1939-7) Datalink. This sensor is responsible for sending all the urea information to the Aftertreatment Control Module (ACM) and Engine Control Module (ECM). Diagnosis and Repair Perform a DTC Readout and Review Codes If any of the codes in yellow below appear on the Readout in Active or Confirmed status: Continue to the diagnostic steps in the following section. DTC P203A13 P203C00 P206A13 DTC Description Reductant Tank Temperature Sensor, Circuit Range/Performance Reductant Level Sensor "A", Open Circuit Aftertreatment Reagent Level, Short Circuit Low Reductant Quality Sensor, Open Circuit P206C00 P206B64 P205A13 Reductant Quality Sensor, Short Circuit Low Reductant Quality Sensor Range/Performance Reductant Tank Temperature Sensor, Open Circuit P205B64 P205C00 Aftertreatment Reagent Tank Temperature, Short Circuit Low DO NOT REPLACE the DEF Level Sensor for any of the codes in green below: DO NOT proceed with the diagnostics steps in this solution. None of these codes immediately indicate a failed DEF Level Sensor. Use the table in conjunction with PTT’s Guided Diagnostics to find the root cause. UI ; LiveDTC DTC Description Probable Source Reductant Level Commonly low DEF quantity or https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD3?pyActivity=%40basec… 1/5 6/1/22, 4:22 PM Article Reductant Level P203F00 Low Commonly low DEF quantity or level sensor float in DEF tank stuck P203B00 Aftertreatment Reagent Level Warning Lost Communication U02A200 with Reductant Quality Module System fault. Follow Guided Diagnostics. Commonly a wiring harness or connection issue. Reductant DEF tank temp above 70°C (160°F). P24FF00 Temperature Too Commonly the coolant lines to the DEF tank High are swapped. DEF quality low and SCR efficiency low. P207F00 Reductant Quality Commonly a DEF quality issue. Diagnostic Steps For Yellow Codes 1. Check the sensor wiring harness connection. • Disconnect the harness and make sure there is no damage to the wires or pins, corrosion, or water ingress in either of the connectors. If damage is found replace in accordance with Technical Service Bulletin 258-040 - Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement. Located in Impact. 1. Navigate to the Service tab. 2. In the Info Type box, make sure Technical Service Bulletins is selected. 3. In the Additional search values box select Keyword 4. Enter 258-040 into the text entry box, press the Search button. 5. A link for the article will be shown in the results. Click on the title, then choose one of the options from the window that opens. ; Live UI https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD3?pyActivity=%40basec… 2/5 6/1/22, 4:22 PM Article 2. Verify the DEF quality is at an acceptable value. • Use refractometer part number 88890105 to verify the DEF quality. See illustration below. 3. Verify that the DEF tank is not frozen. 4. Ensure that the DEF tank is adequately filled. 5. Clear the Fault Codes. 6. Start UI the engine. Run the engine on high idle for 2 minutes at 1000 ; Live rpm or higher. https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD3?pyActivity=%40basec… 3/5 6/1/22, 4:22 PM Article 7. Turn the Engine Off, Key Off for 15 seconds. 8. Start the engine. Run the engine on high idle for 2 minutes a second time. Evaluate the Results If any of the faults shown in the yellow chart above return active: Replace the DEF Level Sensor in accordance with Impact instructions and the wires routed as shown in Technical Service Bulletin 258-040. If none of the faults in the yellow chart above return: No troubleshooting or replacement of the DEF Level Sensor is necessary. Rules for Replacement • Warranty will only cover replacement of the UQLS if one of the codes in Yellow section above is present. If the UQLS is suspected to have failed with no codes present, an eService case is required for further evaluation. • Standard Diagnostic Time for a DEF Level Sensor is 0.6 hrs. Review the video link below. DEF LEVEL SENSOR Tags mack ; Live UI def quality volvo p205b64 p206b64 def level sensor u02a200 uqls p203a13 https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD3?pyActivity=%40basec… 4/5 6/1/22, 4:22 PM Article p206c00 p203b00 p24ff00 p203c00 p206a13 p205a13 p203f00 unlocking uptime Related links and attachments FSB 258-040 p207f00 p205c00 Feedback Give feedback to help improve the content of this article ; Live UI https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD3?pyActivity=%40basec… 5/5