Question about 2001 Pontiac Grand Prix GTP

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Not getting full booste from super charger - 2001 Pontiac Grand Prix GTP

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Could have faulty boost solenoid or check all vacuum hoses look for loose disconnect vacuum hose to boost control solenoid.

Posted on Jul 14, 2013

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Fault codes P0236 and P0046 keep coming up on my freelander1 td4 2004


P0236 = Possible causes are

1. Boost pressure sensor harness is open or shorted
2. Boost pressure sensor circuit poor electrical connection
3. Faulty boost pressure sensor
4. Faulty Turbo/Super Charger
5. Engine over temperature
6. Ignition misfire exceeds the threshold
7. Faulty Knock sensor (KS)

P0046 = Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance

.... based on this information I would replace the turbo boost control solenoid first.

May 02, 2017 | Land Rover Freelander Cars & Trucks

1 Answer

My truck is telling me that turbo/super charger boost control solenoid circuit/open. what can be the problem? my truck has only one turbo but its a super turbo. engin# jo5d


Theres a problem with the solenoid circuit. check back from the vacuum line to find the solenoid then test your wiring and solenoid.

Mar 18, 2014 | Toyota Cars & Trucks

1 Answer

P00A B/1 Com1 ; p00P B/1 Com2


code p0045 refers to turbo/super charger boost control solenoid---circuit open causes ==wiring--boost control solenoid
p0046 refers to turbo/ super charger boost control solenoid--circuit range/ performance===causes ---wiring---boost control solenoid ---mechanical fault.
code refers to system voltage --low===causes wiring---poor connection---battery---alternator
it also refers to ECM power relay control--circuit open===causes -wiring --- ECM relay.
looks like 2 boost solenoids and I would ensure that the battery posts and terminals are shiny clean and tight. have a load test done on the battery to check for bad cell and check the alternator drive belt for condition and tension . Have an out put test done by an accredited auto electrician on the alternator

Dec 31, 2013 | 2008 Dodge Avenger

1 Answer

What does it mean when you get 0046 fault code? Thanks.


Turbo/Super Charger Boost Control Solenoid Circuit

Jun 29, 2011 | 1999 Porsche 911 Carrera

2 Answers

Can you tell me what codes 54 and 21 are on a 1995 caravan 3.0 please?


Hello..
Code 21: Is an oxygen sensor Code 54: Is a crank positioning sensor.
Hope this helps!

Dec 06, 2009 | 1995 Dodge Caravan

1 Answer

Cobalt gauge


only if its a boost and vaccum gauge

Sep 18, 2009 | 2007 Chevrolet Cobalt Coupe

2 Answers

Audi 2006 1.8T engine light stay on diagnostic code PO299 what could that be?


Although I don't have my books here for this particular car, I believe the code is a turbo charger/super charger problem. I think is says low boost which is a mechanical Fault

Aug 05, 2009 | 2005 Audi A4

1 Answer

I have a 2002 Grand Prix GTP and i am having trouble with the supercharger. Most times only getting 1/2 boost on the guage and it runs like a regular 3.8l - the supercharger will ocasionally kick in but...


Check the vaccuum lines to the super charger boost control valve located on the back of the supercharger closest to the air cleaner opposite the pully. If you are not getting vaccuum to the boost control colenoide follow the vaccuum hoses back to the boost control switch and check for engine vaccuum at the switch.

Jul 14, 2009 | 2002 Pontiac Grand Prix

2 Answers

Turbo Boost sensor A


hi what was the code (p 0244)sounds like you need to replace the the turbo wastegate valve .sounds to me like its overboosting as if the charge from the turbo gets too hot the engine will misfire thus causing damage to engine ,the waste gate valve is there to prevent over pressurisation

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