Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- Medium
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $50 to $500
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P1401 EGR Differential Pressure Sensor Signal High (Manufacturer Code) Medium
On Ford vehicles and associated brands, the P1401 code means the sensor that measures EGR differential pressure is sending a higher signal than expected. The sensor hoses are the most frequent cause and the cheapest to fix.