DTC P139C Ford
EGR Sensor C Downstream Hose Off Or Plugged
EGR Sensor C Downstream Hose Off Or Plugged
Description
At idle, the exhaust gas recirculation (EGR) monitor commands the EGR valve closed and checks the differential pressure across the EGR tube orifice which should be zero to indicate the hoses are connected and not restricted. This DTC sets when the differential pressure indicated by the sensor exceeds a maximum threshold or falls below a minimum threshold.
Cause and Solution
The downstream hose is disconnectedThe downstream hose is restrictedRestricted or damaged EGR tube
Diagnosis:
Look for signs of water or icing in the hose. Verify the hose connection and routing. Check the differential pressure feedback EGR sensor for correct mounting and function.
Video Guide
Diagnostic Info
- DTC Code: P139C
- Brand: Ford