The MIL was on the other day, after I ran out of fuel. Apparently my draw straw starts to suck at ~1/8 tank indicated... anyway, I thought it might be related to that, but I just hooked the scanner up and got:P0122 - Throttle Position Sensor Circuit Low VoltageP1689 - Delivered Torque Circuit FailSo, experts, what's the scoop?

Ummm... Mis-translated P1689 - http://forum.mopar1973man.com/threads/2628-P1689-No-Communication-Between-ECM-and-Injection-Pump-Module P0122 - http://forum.mopar1973man.com/threads/2556-P0122-Accelerator-Position-Sensor-(APPS)-Signal-Voltage-Too-Low

Hmm... ok, so I unplugged and reseated the IP connection as well as the APPS, but it's still there.

Are these codes in tandem something to worry about? It does feel *a little* down on power, and it's shifting about 200rpm lower than normal.

--- Update to the previous post...

Actually, come to think of it, I was playing the relay shuffle when it died, because I couldn't get it to pump fuel at all. I quickly figured out that the factory security had shut power to it down, and so a quick double-twist of the key later and I had an operating FASS once again. Could I have set the code by cranking it with that relay out??

Yes... P1689 can and will be set if the fuel pump relay is removed while cranking. Like you found out the fuel pump relay actually controls the VP44 not the lift pump.