P0133 Ford - 96 ford f150

Question

I have a 96 ford f150 4.9 engine. Tonight i notice on my vehicle gear selector the light was on. I tried to drive on 4th gear and it driven fine until i changed shift and i noticed it kind of idle and slown. I figured its the transmission could be a problem. When i turned my engine off i checked the fluid in the transmission and it was flown and foamed. I used the scanning device to check the vehicle it popped 3 codes p0133,p0401,and p01131. Test driven the vehicle again and it shows the code again but on the changing shifter didnt light up though. Can you explain please.email me

Answer 1

Hi there,

P0113 indicates an issue with the O2 sensor on bank 1 sensor 1. Here is a list of possible causes.

P0133 FORD - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

Read more: https://www.autocodes.com/p0133_ford.html

P0401 indicates an issue with the EGR. Here is a list of possible causes.

P0401 FORD - Exhaust Gas Recirculation Flow Insufficient Detected

Read more: https://www.autocodes.com/p0401_ford.html

P1131 indicates the air/fuel mix is too lean. Here is a list of possible causes.

P1131 FORD - Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1

Read more: https://www.autocodes.com/p1131_ford.html