Does anybody understand what this code mean? My truck has been running rough after you start it up but seems to run alright after it warms up a little.I also have these codes as well.
<LI itxtvisited="1">P0470 Exhaust Back Pressure Sensor Circuit Malfunction <LI itxtvisited="1">P0472 Exhaust Back Pressure Sensor Circuit Low Input
The only mods to my truck are an exhaust system from the Cat back and a superchips programer running on the economy setting. Engine has 64000 on it and had the head gaskets replaced at about 54000 with Studs put in instead of the head bolts.

 

whats ebp, map and baro read at key on engne off. odds are you have an issue with teh ebp and or its circuit. also possible ebp connector issue.
IMO you also have an injector issue being caused by a sticking spool valve or 2
fix the ebp issue first.

 

Ok what is ebp?

 

I believe it is the engine back pressure sensor, I think it is back by the turbo on the drivers side.

 

I had the same issue and was also using superchip . I replaced all injectors and still had the issue . It was the FICM . Fuel injection control moduale , have it checked out .

 

Exhaust backpressure sensor. Its either located on the thermostat bracket on the front of the motor or by the driver side valve cover depending on the year of the truck.