I think that you have an intake vacuum leak. It could be the DISA valve at the intake manifold. You have the P0171, P0174 which point to lean condition on both banks. Hopefully the DISA valve pin didn't come off and is now bouncing around the engine. There's a youtube video on removing the DISA Valve. I have a good use DISA Valve ($40 plus shipping). The sealing ring has been replace with a new o-ring.

That was my problem and I'm very anal when it come to the truck so even though the new o-ring fixed the problem I still ordered and installed a new OEM DISA Valve.

As for the p0732 code:

DTC FAULT DESCRIPTION OBD II MONITORING CONDITIONS CHECK TRANS. LIMP POSSIBLE CAUSES
ENG. MIL MIL HOME
P0732 Slip detected – Second gear Drive vehicle so that transmission shifts 2 √ √

Transmission oil level low
through all forward gears; Output speed sensor problem (Refer to P0721
repeat several times and P0722 Possible Causes)
Engine speed signal circuit between ECM and TCM:
open circuit, short circuit, or high resistance
Transmission mechanical failure

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2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
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