DTC Lincoln C1A85-49 Short Explanation
Channel: Maxidot Lincoln
Date: 20/06/2020

The video focuses on the basic Lincoln 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:
Lincoln
Code:
C1A85 49
Definition:
BRAKE LAMP SWITCH CIRCUIT LOW
Description:
When Monitored: With the engine running, vehicle speedhigher then 50 km or h (31 MPH), battery voltagehigher then 9.5 volts. Set Condition: If the PCM detects no change from the Brake Lamp Switch circuit input after coming to a complete stop, it will increment a counter. If the counter increments 10 times, the DTC will set and the MIL will illuminate
Cause:
INTERMITTENT CONDITIONFUSED B+BRAKE LAMP SWITCH SENSE CIRCUIT OPENBRAKE LAMP SWITCH SENSE SHORTED TO GROUNDGROUND CIRCUIT OPENBRAKE LAMP SWITCH OPERATIONPCM
Failure Type:
Internal Electronic Failure
This sub type is used by the control module to indicate the detection of an internal circuit failure.