First post, heh. Anyway, got a 06' 2500, and my first CEL appearedtoday (constantly on, no blinking). Just 12k on it too[>:]

Checked what code it threw as per the instructions in the CTD faq. Turns out it's a P 0191: Fuel Rail Pressure Sensor Circuit Range/Performance. My question, is this anything serious? This isn't one of those gas cap CEL's is it (after a check, turns out is wasn't properly put on). Should I take it to the dealer? Forgive me, as you can tell, I'm not too automotively inclined

Any help would be appreciated.

 

IV had that same code three times on my 05.
Took it to the dealer and the first time I got it and they changed the sensor.
The last time I got it, they just reset the code.
They acted like it was no big thing.

 

I've had my 06 for 2 weeks. Got the same code at 170 miles.

Called the dealer. They recommended I come in to re-flash the computer. The engine light eventually went off.

Took it in this morning. For the re-flash.

They told me I already had the latest software update, the fuel pressure was normal and the sensor was reading properly.

They cleared the code and told me they’d replace the sensor if it happened again.

 

Okay, cool. Appreciate the info.