SureTrack Community Real Fix: Ford Mondeo Flow Too Low

Real Fixes from the SureTrackĀ® expert information resource are documented issues from actual shop repair orders and community discussions. Read on to see how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is currently available free with the purchase of a current Snap-onĀ® diagnostic software version.

Vehicle
2019 Ford Mondeo 2.0L Diesel

Title
P04D9-00, Cleaned Exhaust Gas Recirculation Valve

Complaint
The customer states that the check engine light is on.

Cause
Connected a scan tool and found code P04D900 – Closed Loop Exhaust Gas Recirculation Valve Control At Limit – Flow Too Low. Performed a road test, used the scan tool to monitor live data and found the exhaust gas recirculation valve parameter was below specifications. Key on engine off, used the scan tool to command the exhaust gas recirculation valve on and found the valve was inoperative. Performed an inspection of the exhaust gas recirculation valve wiring harness and connectors, and found there were no loose connections or signs of damage. With the key on, engine off, used a multi-meter to check for the presence of voltage and ground at the exhaust gas recirculation valve and found both were present. Used a set of fused jumper wires to repeatedly apply voltage and ground to the exhaust gas recirculation valve, and found the valve was inoperative. Removed the exhaust gas recirculation valve, performed a visual inspection of the exhaust gas recirculation valve and found it was clogged with carbon.

Correction
Cleaned the exhaust gas recirculation valve, cleared codes, performed a road test and verified the vehicle operated properly. The check engine light did not illuminate and no fault codes returned.


SureTrackĀ® is a powerful value-added feature available with select Snap-on diagnostics tools. It offers an exclusive combination of expert knowledge and detailed parts replacement records, all wrapped in an interactive community.

Want more? Click here for more information on using SureTrack.

Looking for diagnostic tools? Click here to request more information on Snap-on diagnostic tools.

New or Expired SureTrack users: Click here for authorization key instructions.

About the Author

Abagail Lucero

Abagail Lucero is the Product Marketing Manager for ProDemand. She joined the company in 2011 as a member of the SocialCRM shop marketing team and has served in many roles at Mitchell1, lastly as Security and Compliance Supervisor. Abagail holds a Bachelor of Science degree from California University of Pennsylvania.