DTC Hummer U0073-71 Short Explanation
Channel: Maxidot
Date: 2020-12-10

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:
U0073 71
Definition:
Fuel Level Sensor 1-Circuit Short To Battery Or Open-Non SRT
Description:
The Body Control Module (BCM) provides a switched reference voltage on the fuel level signal circuit through a pull-up resistor that is connected to battery voltage. The BCM monitors the voltage on the fuel level signal circuit. The fuel level signal is adjusted for changes in battery voltage. The voltage value is then transmitted as a network message on the communication network.
Cause:
(N4) FUEL LEVEL SENSOR SIGNAL CIRCUIT OPEN(N4) FUEL LEVEL SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE(G109) FUEL LEVEL SENSE RETURN CIRCUIT OPENFUEL LEVEL SENSORBODY CONTROL MODULE (BCM)
Failure Type:
Actuator Stuck
This sub type is used for failures where the control module does not detect any motion in response to energizing a motor, solenoid, relay, etc.