1999 Ford Couture SE with engine code P0190 and P1237

Question

I am getting codes P0190 and P1237. I have replaced the fuel pump 3 times in the past 2 years
I live in Arizona, and it seems this happens whenever it gets hot outside. Is it possible heat is affecting these sensors?

Answer 1

P0190 Fuel rail pressure sensor circuit

P1237 Fuel pump secondary circuit malfunction

Try replacing the fuel pump relay, clear the codes? which is located in the fuse relay box.

 

Here a fuel rail pressure sensor, P0190 can also be set due to a failing rail pressure sensor rather than the fuel pump

Answer 2

P0190 FORD - Fuel Rail Pressure Sensor Circuit Malfunction
Read more: https://www.autocodes.com/p0190_ford.html

P1237 FORD - Fuel Pump Secondary Circuit Fault
Read more: https://www.autocodes.com/p1237_ford.html