P142A · نشرات الشركة المصنعة

CHEVROLET, GMC · 2024-04-16

This service bulletin provides a service procedure to correct a customer concern of the Malfunction Indicator Lamp (MIL) Illuminated - DTC P062F, P040B, P041B, P0422, P060C, P062B, P1428, P142A, P20EE, P20FE, P22F9, P244A, and/or P244B Set.

HINO · 2016-07-14

SB-16-016 Enhanced DCU (Dosing Control Unit) software has been released to address the following conditions: Illumination of the check engine light. The DCU may falsely detect an issue and record any of the 3 following DTC?s in the DCU. P142A(DEF pump temperature sensor - Out of range) P204B(DEF pressure sensor ? Rationality) P20A1(Reverting valve for DEF pump stuck close) In rare cases, the completion of the after-run process might be mistakenly aborted. This occurs when the ignition key is cycled back on and then off prior to after-run completion. If this occurs when ambient temperatures are below freezing and the urea is allowed to fully freeze, internal damage to the DEF pump may occur. Once damaged, urea could migrate into the DEF pump electrical connector and SCR harness resulting…

HINO · 2016-07-14

SB-16-015 Enhanced DCU (Dosing Control Unit) software has been released.Illumination of the check engine light. The DCU may falsely detect an issue and record any of the 3 following DTC?s in the DCU. P142A(DEF pump temperature sensor - Out of range) P204B(DEF pressure sensor ? Rationality) P20A1(Reverting valve for DEF pump stuck close) In rare cases, the completion of the after-run process might be mistakenly aborted. This occurs when the ignition key is cycled back on and then off prior to after-run completion. If this occurs when ambient temperatures are below freezing and the urea is allowed to fully freeze, internal damage to the DEF pump may occur. Once damaged, urea could migrate into the DEF pump electrical connector and SCR harness resulting in corrosion. This corrosion could…

HINO · 2016-01-11

SB-16-004 1. In the event that a subject vehicle exhibits an illuminated check engine lamp and DTC?s P2201, P2214, P206B, P207F, or P20EE are stored in the DCU, the NOX sensor may have failed due to a cracked NOX sensor heating element. Follow the revised Workshop Manual diagnostic procedure to determine if the NOX sensor has failed. 2. Enhanced DCU software is available to prevent the NOX sensor heating element from cracking due to exposure of condensation on the heating element. 3. The enhanced DCU software will also prevent false detections of DTC P142A being set in the DCU.

HINO · 2015-12-04

A DEF system equipped truck may come in to the dealer with a coimplaint that the MIL is on and DTC P142A is stored in the DCU. This DTC can set when the pump temperature sensor signal is out of the expected range when coimpared to other temperature inputs. If the P142A code is encountered, clear the code and release the truck. Do Not replace the Diesel Exhaust Fluid (DEF) pump because it may result in a warranty chargeback, if the pump assembly is replaced when not required. This coinditiion may be related to an engine ECU software condition that will be addressed in an upcoming engine ECU soft ware update. For additional information on this coincern, please see TT-15-025

HINO · 2015-12-04

A DEF system equipped truck may come in to the dealer with a complaint that the MIL is on and DTC P142A is stored in the DCU. This DTC can set when the pump temperature sensor signal is out of the expected range when compared to other temperature inputs.