Could a bad throttle body cause a low hum while driving and a turbo underboost error code?

what does wrong mean,. put in backwards? or too low CCA spec.? or DID HORROR# 1 CONNECTED IT BACK WARDS.LUGS. !!! AND BLEW UP LOTS OF FUSES. OR FAR WORSE.$$$$ ELECTRONICS###
not told does starter motor crank the engine fast or not?. if dead starter there are 6 electrical causes.
no engine start is 50 causes(up to or more) but cranks fast.

P code power train gross errors all.

222- tbw dead. throttle by wire, not good that.
1624 is TBW fails
1417 same caUse , low air supply at TB

cars that fails TBW can start and only drive VERY slow
or can be dead engine, due to unsafe readings from TBW,
the bad parts are at the throttle pedal POTS.
or TB or both' (TB MEANS THROTTLE BODY))
TBW runs 4 pots aka TPS sensors 2 on TB and 2 on pedal (gas as folks say) if the 4 TPS anY disagree engne EFI goes to limphome, mode if the error is extreme
NO START
TPS MEANS THROTTLE POSITION SENSORS.
OR THE TB MOTOR FAILS, OR JUST JUST JAMMED UP A BIT, i CLEAN IT GENTLY
1417 hint that the motor is stuck closed in TB.

You don't say which model vehicle but here is a general link. P0299 Turbo Supercharger Underboost

the following answer is courtsey of OBD-CODES.com OBD Codes Your OBD-II Trouble Codes Repair Site Home Trouble Codes FAQs Forums Store P0299 Turbo / Supercharger Underboost OBD-II Trouble Code Technical Description Turbocharger/Supercharger "A" Underboost Condition What does that mean? The P0299 DTC code refers to a condition where the PCM/ECM (powertrain/engine control module) has detected that the bank "A" or single turbocharger or supercharger is not providing a normal amount of boost. That could be due to a variety of reasons, which we detail below. On a normally operating turbocharged or supercharged engine the air going into the engine is pressurized and that's part of what makes so much power for an engine of it's size. If this code is set, you will likely notice reduced power output. In the case of Ford vehicles, this may apply: "The PCM checks for a minimum throttle intake pressure (TIP) PID reading during engine operation, which indicates an underboost condition. This DTC sets when the PCM detects that the actual throttle intake pressure is less than the desired throttle intake pressure by 4 psi or more for 5 seconds." Symptoms Symptoms of a P0299 DTC may include: MIL (Malfunction indicator lamp) illumination Reduced power output from engine, possibly in a limp mode Unusual sounds from the engine/turbo There would likely be no other symptoms. Potential Causes Potential causes of a P0299 turbo underboost code include: Intake (induction) air restriction or leak Failed or damaged turbocharger (sticking, binding, etc.) Faulty boost/charge pressure sensor Faulty wastegate bypass regulator valve (VW) Low fuel pressure condition (Isuzu) Sticking turbo nozzle control solenoid (Isuzu) Faulty injector control pressure (ICP) sensor (Ford) Low oil pressure (Ford) EGR system fault (Ford) Variable geometry turbocharger (VGT) actuator (Ford) VGT vanes sticking (Ford) Possible Solutions First off, you'll want to repair any other DTC codes if present prior to diagnosing this code. Start with a visual inspection. Inspect the intake air system for cracks, loose or disconnected hoses, restrictions, blockages, etc. Repair or replace as required. If the air induction system tests OK, then you'll want to focus your diagnosis efforts on the charge pressure control, diverter valve (blowoff valve), sensors, regulators, etc. Really at this point you'll want to refer to a vehicle specific detailed repair manual for specific troubleshooting steps. There are some known issues on certain makes and engines so also check out our car repair forums here and search using your keywords. For example, if you search around, you'll find that a common fix for a P0299 in VWs is to replace or repair the diverter valve or wastegate solenoid. On the GM Duramax diesel, this code may mean the turbo housing resonator has failed. If you have a Ford, you'll want to next check the wastegate regulating valve solenoid for correct operation

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P0299 Volkswagen Turbocharger Engine Underboost

Notice that 2 of the 3 causes are related to the turbo. A waste gate is the dump valve to let the air out when the engine is not consuming all the air that the turbo is creating.

This sounds like a very dirty throttle body. On the turbo cars it's pretty hard to get to the throttle body for removal and cleaning. I'm not sure about non-turbo.... Either way, a good throttle body cleaning should help out with this code.

P0299 VOLKSWAGEN - Turbocharger Engine Underboost
Possible causes- Faulty Wastegate Bypass Regulator Valve
- Mechanical damage at Turbo/Super Charger
- Faulty Charge Air Pressure Sensor

There is a boost control valve that can cause problems. It can go bad. It has 3 vacuum hoses attached to it to change vacuum direction to turbo and wastegate valve. The boost control valve can go faulty or stick and not allow boost.

will it shut off or just rev? if just shuts off it could be a grounded turbo shaft,bad mass air sensor.remove intake pipe to turbo then check for play or for froze up turbo compressor wheel by moving the comp wheel,check for excess play each way,<>^

yes, this is the case of a failed throttle body, in which case it needs replaced, the car is getting too much fuel causing the high idle. this needs replaced asap. you could proably find a small independant honda shop that could do the work for less.

well that can be a pain to deal with down unda!


Personally i think the traction control and the stumbles are not related. find out what the check engine light is, and go from there, could be as simple as a coil over, coil or set of plugs/wires or could be a gummed up throttle body, or vacuum leaks, check all the vaccum lines clean the throttle body test drive and , find the code and do some research and or post the code here and i will try to get back to you. a misfire code can be really helpful if it tells you which cylinder, if your over due for plugs just buckle down and replace them.i say
dont throw parts at it because it might not help and get expensive, but cleaning the throttle body and checking vacuum lines, replacing plugs should be preventative maintenance in my book.
use a throttle body cleaner can you can get a local parts store to clean out the throttle body. dont use carb cleaner as it could damage sensors,
if your mind is stuck on the traction control and or you get the stumbling fixed start on that here :

for the hard shifts check the transmission fluid for dark colors or burnt smells. then check out the motor mounts and trans mounts, but that should be done before moving onto the Traction control.

anyways if you suspect the traction control start with checking all the abs sensors. can use a good scanner with live data to save you time and check to see if they are all giving you good readings.
if no scanner is available you need to see if they can be removed from the hub, but be careful as they can break off inside. if they are removable from the hub check them for metal particles and make sure they arnt ground down on the ends, a bad hub will grind down the ends of them. if they look good then let me know
Good luck.