DTC Mazda U2473 Short Explanation
Channel: Maxidot Mazda
Date: 13/07/2020

The video focuses on the basic Mazda 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:
Mazda
Code:
U2473
Definition:
EGR Position Sensor Signal Performance
Description:
Engine started;system voltage over 10.5v and the PCM detected that the EGR flow (or valve movement) was not what was expected during the test period.
Cause:
EGR Sensor signal circuit is open or shorted to groundEGR Sensor 5v supply circuit is open or has high resistanceEGR Sensor ground circuit is openEGR solenoid control circuit has a problemEGR valve actuator loose,sticking,blocked or improperly groundedEGR Sensor is damaged or has failedIntermittent conditionPCM has failed