well its been 95,xxx miles on my hemi and i am getting my first problem (other than the brakes problem) and im getting this CEL p2175 i dont realy understand what is goin on, the CEL just came on along with light that looks like a thunder bolt and i turned the truck off then on again and it went away then i went to my job to see if it whould read any codes and it came up with whats in the picture below only thing i chould find in our systems was that TAC stands for throttle actuator, has anyone gotten this code? and if so how did you fix it?

[IMG]local://upfiles/8759/43C03F18A6364077A7986271614AB110.jpg[/IMG]

 

My owners manual says that the "lightning bolt" is the electronic throttle and this will illuminate if there is a problem. Now as far as the rest of your prob I can't help. Sorry!

 

oh man i never noticed this truck had a electronic TB man this sucks i hope the whole TB isnt goin out on me

 

P2175-LOW AIRFLOW/RESTRICTION DETECTED (SLOW ACCUMULATION)
When Monitored: Ignition on and no MAP Sensor or TP Sensor DTC present.
Set Condition: MAP Sensor has failed in one of four ways based on the Gas Flow
Adaptation value being too low. One trip fault. Three good trips to turn off the MIL. ETC
light will flash.
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
RESTRICTED AIR INLET SYSTEM
RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT
RESISTANCE BETWEEN GROUND AND THE (F856) 5-VOLT SUPPLY CIRCUIT
MAP SENSOR
RESISTANCE IN THE (K1) MAP SIGNAL CIRCUIT
RESISTANCE BETWEEN GROUND AND THE (K1) MAP SIGNAL CIRCUIT
RESISTANCE IN (K900) SENSOR GROUND CIRCUIT
TP SENSOR OPERATION
RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT
RESISTANCE BETWEEN GROUND AND THE (F855) 5-VOLT SUPPLY CIRCUIT
TP SENSOR
RESISTANCE IN THE TP SENSOR SIGNAL CIRCUIT
RESISTANCE BETWEEN GROUND AND THE TP SENSOR SIGNAL CIRCUIT
RESISTANCE IN THE (K922) SENSOR RETURN CIRCUIT

 

man thats alot of stuff to check i dont even know what some of that stuff means

 

I agree that is a list and a half. I work part time at an Advance Auto Parts and I would go with what he wrote. The code scanners we use are not what I would consider a diagnostic tool. They will tell you a little but it is a very little!! Good luck and I hope it is real real simple.

 

yeah for a scanner it does suck i was hopeing someone whould have ran into this befor

 

WOW, that is a list!! sheeish... so I guess it's a 30 pack Keystone weekend huh, did this fix your prob? I've had this issue for 2 years but only use the truck to load and unload a boat so it was never a big issue till now

( boat dock removed)

 

4 can's of brake cleaner later, a ruined tupperware container and this problem is fixed!! Lemme tell ya there was a lot of gunk in there & the TB, going on week3 today and not a single blip of the codes mpg is back up to 18-23 finally, sure is nice now that it's3 bills again here in Texas

 

well good to see you finally got it fixed!!!