DTC Oldsmobile P1886 Short Explanation
Channel: Maxidot
Date: 20/08/2020

The video focuses on the basic Oldsmobile 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
Oldsmobile
Code
P1886
Definition
ICC Brake Switch
Description
NOTE If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605  This self-diagnosis has the one trip detection logic  When malfunction A is detected,  DTC is not stored in ECM memory  And in that case,  1st trip DTC and 1st trip freeze frame data are displayed  1st trip DTC is erased when ignition switch OFF  And even when malfunction A is detected in two consecutive trips,  DTC is not stored in ECM memory   Condition A ON signals from the stop lamp switch and the ICC brake switch are sent to ECM at the same time   Condition B ICC brake switch signal is not sent to ECM for extremely long time while the vehicle is driving
Cause
 Harness or connectors - The stop lamp switch circuit is shorted - The ICC brake switch circuit is shorted Stop lamp switch ICC brake switch ICC brake hold relay Incorrect stop lamp switch installation Incorrect ICC brake switch installation ECM