DTC Hummer P0742 Short Explanation
Channel: Maxidot Hummer
Date: 20/06/2020

The video focuses on the basic Hummer specific diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make:
HUMMER
Code:
P0742
Definition:
Invalid Data Received From Reductant Control Module
Description:
This DTC sets when the PCM detects an invalid message from the reductant pump control module.
Cause:
RDPM circuit openRDPM short to groundDamaged reductant pump control module
Diagnosis:
The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center.