What is the P1131 emission code for a 2004 Ford Taurus?

Answer by  Advizor (230)

Lean fuel mixture at the front header oxygen sensor. The sensor adjusts fuel based on the temperature of the exhaust. This code happens when the sensor becomes stuck or worn.

Answer by  Samhane (703)

The P1131 emission code is the generic emission code that the air to fuel mixture is to high and pushing out a lot of Co2 in the air. In laymans terms it is polluting he air and replacing the sensors is highly recommended. The convertors are also a good idea to replace.

Answer by  MechanicGuy (137)

A repair like this is totally doable at home even for someone who's new to car repairs. You're going to need a few things. A good tool set is handy, a set of sockets, and basic items. You're going to need your car manual, which typically includes a schematic inside.

Answer by  kennethjgoodson (4903)

That should be a misfire code. You are probably going to notice that the car is struggling when you are getting on the freeway first thing in the morning. It can cause more serious problems later on if you do not take care of it and it will get costly.

Answer by  kennethjgoodson (4903)

The code is for a leak in the evap system. It is not a major problem with the car and it won't break down but it can cause the car to get bad gas mileage when driving long distances. The best thing to do is to take it to a shop and they will smoke it to find the leak.