Code "P2 138"

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Ludville1

Senior Member
Joined
Jul 23, 2018
Posts
508
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889
Location
Michigan
Ram Year
2009
Engine
5.7 Hemi Sport Crew
Truck threw a code today: "P2 138 Throttle/Pedal Position Sensor Switch D/E Voltage Correlation". Started the truck and the red lightning bolt on the dash was flashing. Truck would idle, go into gear, but had no throttle response. Turned off the truck and restarted several times, to no avail. Really sucked, because I was way back in the woods getting things ready for hunting season (October 1st). Let the truck sit for a bit, started the truck, and drove it the 20 miles home! Seems fine now. It appears that the TPS switch is part of the throttle body, and cannot be replaced by itself, as some of the older models were. The truck has a Moe's ported 87 mm throttle body on it, and I also have the stock throttle body. Anyone else have this happen, and did it reoccur?
 

keith.C.2313

Senior Member
Joined
Jun 30, 2014
Posts
146
Reaction score
52
Location
Indiana
Ram Year
2015 Ram 1500 Sport
Engine
5.7
I had a ported throttle body (GPE) on my 2015 and it threw a similar code. It would surge at stop lights like I was hitting the gas. Kinda dangerous, so I put the stock back on. Messaged GPE about it and he said he never heard of that happening before. $300 paper weight now.

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