I've run a diagnostic check on my 1998 Mondeo ST24 and it's picked up 2 stored fault codes.
1) P0401 - Exhaust Gas Recirculation Flow Insufficient Detected.
2) P1131 - Manufacturer specifc code. This looks to be the front lambda sensor from what I've found out.
I have no idea what the 1st code is about and so have no idea how to fix it. Any help here explaining what it does and how to fix it would be great.
I understand the lambda sensor fault but haven't looked at how hard they are to replace yet.
1) P0401 - Exhaust Gas Recirculation Flow Insufficient Detected.
2) P1131 - Manufacturer specifc code. This looks to be the front lambda sensor from what I've found out.
I have no idea what the 1st code is about and so have no idea how to fix it. Any help here explaining what it does and how to fix it would be great.
I understand the lambda sensor fault but haven't looked at how hard they are to replace yet.