DTC Lincoln B0055-11 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:
B0055 11
Definition:
O2 Sensor 2 or 1 Pump Cell Current Trim Circuit Low
Description:
The wide-band O2 Sensor operates differently than traditional O2 Sensors. The wide-band O2 Sensor tip consists of two cells that provide different functions, a measurement chamber and a detection chamber with pumping capabilities. The oxygen pumping function is the ability to pump oxygen into or out of the measurement chamber depending on the level of oxygen in the measurement chamber. This function provides the wide-band sensing capabilities and is critical for proper oxygen measurement. The O2 Sensor Reference circuit provides a common bias supply to both the O2 Sensor Signal and the O2 Sensor Pump Cell Current circuits.
Cause:
O2 1 or 1 PUMP CELL CURRENT TRIM CIRCUIT SHORT TO GROUNDO2 SENSOR 2 or 1POWERTRAIN CONTROL MODULE (PCM)
Failure Type:
Circuit Short To Ground
This sub type is used for failures, where the control module measures ground (battery negative) potential for greater than a specified time period or when some other value is expected.