Traditional gasoline car fault
Search fault code and browse forum case posts.
1999 Ford F150 401 Code: Insufficient EGR Flow - DPFE Sensor Replacement and EGR Passage Cleaning Solution
My 1999 Ford F150 recently triggered the Check Engine Light (CEL) with a persistent 401 code indicating insufficient EGR flow. After researching forums, I found that replacing t...
99 F150 401 | P04012000 Mustang V6 P0401 Code: Exhaust Gas Recirculation Flow Insufficient - Diagnosis and Fix
Hello, I own a 2000 Mustang V6 with 87,000 miles. I recently picked up the P0401 diagnostic code using an OBD-II scanner. The vehicle runs roughly when cold and exhibits detonat...
2000 Mustang V6 | P04011996 Mercury Sable 3.0L V6 P0401 and P0430 Fault Codes: Causes and Fixes
Last night, when I started my 1996 Mercury Sable with the 3.0L V6 engine, the Service Engine Soon light was illuminated. After connecting a OBD2 scanner, I found two diagnostic ...
1996 mercury sable | P0401OBD Code P0401 and P0720 in 2001 Ford Taurus: Causes, Fixes, and DIY Replacement Guide
I own a 2001 Ford Taurus that is currently displaying OBD diagnostic codes P0400 (Exhaust Gas Recirculation Flow Insufficient) and P0720 (Speed Sensor Circuit Malfunction). The ...
2001 Ford Taurus | P0401P0401 EGR Flow Insufficient Code on 1998 Ford F-150 4.6L Engine - Diagnosis and Fixes
My 1998 Ford F-15
98 Ford F-150 4.6L | P0401P0401 Honda Accord V6 2000 also question about transmission
Hello all! Glad I found this cool forum. I have a 2000 Accord and the check engine light came on. Honda told me it was error P0401 EGR Flow insufficient. Wish I had known abou...
Honda Accord V6 2000 | P0401P0401 Diagnostic and Fix for Ford Explorer Sport Trac - DPFE Sensor Solution
Hello everyone, My Check Engine light came on, and after scanning at AutoZone, they reported a P0401 code indicating EGR insufficient flow. I replaced both the EGR valve and EG...
FORD EXPLORER SPORT-TRAC | P0401