DTC Subaru P1421 Short Explanation
Channel: Maxidot Subaru
Date: 2020-06-20

The video focuses on the basic Subaru 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:
Subaru
Code:
P1421
Definition:
CAN Steering Position Sensor Circuit Malfunction
Description:
DTC U0126 can be set anytime the ignition switch is in the ON position.
Cause:
Thoroughly inspect the wiring and the connectors.An incomplete inspection of the wiring and the connectors may result in a misdiagnosis,causing a part replacement with the reappearance of the malfunction.The following are possible causes of the malfunc