K20878118
Service Bulletin Details
Public Details for: K20878118
Diagnostic trouble codes ( dtc ) P205B-64 - reductant tank temperature sensor circuit range/performance - model year 2018 and newer
Models from 2020
| 2020 VOLVO VAH |
| 2020 VOLVO VHD |
| 2020 VOLVO VN |
| 2020 VOLVO VNL |
| 2020 VOLVO VNR |
| 2020 VOLVO VNX |
Models from 2019
| 2019 VOLVO VAH |
| 2019 VOLVO VHD |
| 2019 VOLVO VN |
| 2019 VOLVO VNL |
| 2019 VOLVO VNR |
| 2019 VOLVO VNX |
Models from 2018
| 2018 VOLVO VAH |
| 2018 VOLVO VHD |
| 2018 VOLVO VN |
| 2018 VOLVO VNL |
| 2018 VOLVO VNR |
| 2018 VOLVO VNX |
Solution K20878118 Wednesday, December 4, 2019 9:39:40 PM CET ** SOLUTION ** Title Diagnostic Trouble Codes ( DTC ) P205B-64 - Reductant Tank Temperature Sensor Circuit Range/Performance - Model Year 2018 and Newer Mack Models Mack Model LR , TE - TerraPro , AN - Anthem , GR - Granite , PI - Pinnacle Volvo Models Volvo Model VN , VNL , VNR , VNX , VAH , VHD ** SOLUTION ** Cause Guided Diagnostics stops at No Fault Found. Solution If P205B-64 is present as ACTIVE on a DTC readout: 1. Follow the normal steps for Guided Diagnostics (GD) using Premium Tech Tool. 2. If Guided Diagnostics leads to No Fault Found: Replace the sensor. 3. Verify the repair. This solution will be updated as more information becomes available. Internal comments (FO) The last info I have from Aaron Cool: QJ 1-10729812409 (Protus F302059) P205B. There appear to be at least 2 different causes for P205B faults, the QJ only addresses the P205B faults caused by liquid ingress into the electrical box of the UQLS sensor. Liquid ingress into the electrical box can also cause P205C and P206C codes, so the QJ fix will likely result in a reduction of those codes as well. The other cause of the P205B (and also P24FF) faults is due to a high temperature offsets coming from the temperature sensor of the urea-quality section of the UQLS. The exact root cause of these high temperature offsets is still being investigated but it seems to be completely separate from the liquid ingress issues covered in the QJ Solution visibility Dealer distribution Function(s)/component(s) affected Function affected DEF Dosing Function Group Function Group 258 emissions after-treatment Customer effect Main customer effect fault code/display Fault Codes And Error Codes OBDII Diagnostic Trouble P205B-64 Codes (P, U, B Format) Conditions Frequency of occurrence of problem random Administration Author UT5061H Dealer ID UT5061H Last modified by A241298 Creation date 11-10-2019 17:10 Date of last update 06-11-2019 14:11 Review date 07-01-2020 00:01 Status Published UNCONTROLLED COPY. Printed document is for temporary use only and should not be retained.