P0642 Ford - i deleted my cats and had costum tune

Question

P0642 Ford - i deleted my cats and had custom tune...after i applied it arund 50 miles later car will run rough or stall.it also blows alot of white smoke that smells like gas while idle..

Answer 1

Hi there,

This code indicates an issue with the ECM, but it could also be an issue with the tune. Here is some info for this code.

P0642 FORD - Sensor Reference Voltage 'A' Circuit Low

Read more: https://www.autocodes.com/p0642_ford.html