2nd Gear Slipping - Giving Jerks

[nj_nalin]

HI...

Please help me with the following case.

I own a Acura 3.2 CL - Automatic Transmission which I bought as a 3rd Owner. I saw that this car was recalled in 2004 for 2nd Gear Transmission Issue.

Problem is: Now I am facing an issue while the car is in 2nd gear. It gives jerks & doesn't move to 3rd gear.... Also engine makes noise while it gives jerks & "Check Engine" light starts blinking on panel.
If somehow it moves to 3rd gear; than it works perfectly fine...

I got it checked at a nearby Honda dealer & they told that the error code refers to Misfire due to "Throttle Position Sensor" (TPS) which has to be replaced. But no ACURA dealer in nearby area had that sensor.. (out of stock) so it can be changed next week only.

I have 2 questions:
1. Is it safe to drive the car in such situation?
2. Will new TPS solve issue or its a Transmission issue (Dealers are making fool & seeking money)

Thanks!!!

[nj_nalin]

I checked the error codes again today... they are P1399,

P0300, P0301 & P0305. All these error code doesn't indicate

any tranny failure.
Does transmission failure show any error code or they are

just experienced; like jerk or gear slippage?