Hi all, 2016 stock truck with 184k KM. Last couple weeks I’m getting a P0108 code and a “Service electronic throttle“ message. Clear the code, then on first start, Code reader shows the MAP output at 85 engine off (which is good). Gives reasonable results for the first couple miles, then the graph starts showing spikes more and more often, up to 255 (not good), where after a few more miles, it stays high. Next morning, same deal. The colder the morning, the longer it runs fine. Seems like a bad wire, connection, or sensor. First tried cleaning, then Replacing the MAP sensor, no change. I’ve tried wiggling all the connections and wires and fuses and relays I can find when it’s reading high - no change. I’ll try again in the morning when it should be reading low again, maybe a fault from working to not working will be easier to find than the other way around.
P0108- high manifold absolute pressure make’s sense as the bad output is high. Which triggers the throttle message, also makes sense. I think the MAP info just isn’t getting to the ECU.
Engine below freezing makes it work for a bit. Bumps and brakes make the MAP output graph start to spike and continue spiking down from 255 for a while, then steady at 255.
It’s quite drivable, but certainly lower power.
Any trouble shooting ideas?
P0108- high manifold absolute pressure make’s sense as the bad output is high. Which triggers the throttle message, also makes sense. I think the MAP info just isn’t getting to the ECU.
Engine below freezing makes it work for a bit. Bumps and brakes make the MAP output graph start to spike and continue spiking down from 255 for a while, then steady at 255.
It’s quite drivable, but certainly lower power.
Any trouble shooting ideas?