DTC Ford P21D1 Short Explanation
Channel: Maxidot Ford
Date: 2020-06-29

The video focuses on the basic Ford 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:
Ford
Code:
P21D1
Definition:
Power Seat Control Unit Lost Communication with MICU (MIRRORSW Message)
Description:
Poor communication between the Power Seat Control Unit and the Gauge Control Module.NOTE: If you are troubleshooting multiple DTCs,be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.If DTCs B1011, B1060, B1061, B1205, B1357, B1359, B1408, B1805, B1806, B1906, and B2160 are also indicated,Perform the gauge control module input test.If no addition codes are present,replace the Power Seat Control Unit.
Cause:
 Loose or poor connections between the Power Seat Control Unit and the Gauge Control Module Blown fuse in the main under-hood fuse box Blown fuse in the under-dash fuse or relay box “Open or “Short” Condition between the Power Seat Control Unit and the Gauge Control ModuleFaulty Mirror Switch Faulty Power Seat Control Unit Faulty Gauge Control Module