DTC B103D Lincoln
Fuel System Leak Detected - Small Leak
Fuel System Leak Detected - Small Leak
Description
This DTC sets when the powertrain control module (PCM) detects an air leak that exceeds a calibrated limit for greater than 5 seconds. If the airflow entering the engine exceeds the airflow through the throttle, a leak is detected and this diagnostic fails.
Cause and Solution
Unmetered air leaks between throttle body and intake valvesAir leaks at the intake manifoldPositive crankcase ventilation (PCV) system is leaking or the PCV valve is stuck open
Diagnosis:
Verify the integrity of the PCV system.
Video Guide
Diagnostic Info
- DTC Code: B103D
- Brand: Lincoln