Service exhaust soon on 2011 2500 hd

Yah see a dealer, you will need a scan tool.

Follow the link for help with this fault code P1405 Ford DPF EGR Sensor Circuit High Voltage Detected

I suggest you replace the EGR valve position sensor.

The malfunction indicator lamp is illuminated when ever there is a fault in either the monitoring system or a control system which could cause damage to the engine or exhaust catalyst. It also illuminates when the exhaust catalyst has failed.

There are two O2 sensors. One in the Y pipe where it connects to the exhaust pipe and the second one is in the exhaust pipe between the catalytic converter and the muffler. There a hundred things that will cause the service engine soon light to come on. A problem with the O2 sensor is just one of them.

The Service Engine Soon is for an exhaust emissions issue and the EML is engine electronics. Could be a sensor or something else.

If you can tell where the sound is coming from. Look for any smoke venting out. It maybe that the exhaust manifold gasket is going bad. This will cause exhaust to escape from the engine before the tail-pipe. If this is the case, it will not pass SMOG. Could be dangerous for you health as well.
If this is the case, you should be able to hear the gas escape when giving it some gas in Park. Could be the muffler or any part of the exhaust depending on where it is coming from.

must have a bad o2 sensor need to check with a scanner auto zone and advance auto parts do it for free.

white smoke is condensation in teh exhaust ,this is normal,the computer is just telling you it will need a service soon because the mileage is coming up and the computer reads it ,if it runs ok then leave well alone just have it serviced and ask garage to reset the light

you need to change the oxygen sensor. it will soon cause you problems. after you need to take it in to  erase the code.

hi,

incomplete exhaust burn sensor, On my 97 Grand Prix I had to get plugs, plug wires and finally complete injector service to get the light out for any period of time.

good luck

J