2005 GMC C5500 throwing a code P0193. Changed the fuel Rail Pressure Sensor. No Luck. Do I need to replace the FICM? and is there any way to know if the unit is good or bad
2005 C5500 LLY help
- Thread starter brcinfay
- Start date
Yeah worm what Tom said. 0193 is a fuel temp code isn’t it? Mine showed that code quite a bit when the injectors were returning too much fuel. A race plug and a lift pump fixed the code though and brought rail pressure from 13k to 19k lol.