Question about 2005 Pontiac Grand Prix

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Computer states that there is reduced engine power

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Check the back pressure on the catilist anything above 2 psi means they are clogged . otherwise there would also be a reason for them to clog sensor ect . also check the wires at the throttle motor

Posted on Jan 03, 2011

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Check engine light came on then reduce engine power


When this light comes on it means the computer control module has detected a fault in the system, it has reduced power to avoid any damage to the engine or transmission. You must now have the computer scanned for fault codes, this is done through the diagnostic connector under the dash see photo below.
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Sep 26, 2016 | 2006 Chevrolet Malibu

2 Answers

Diesel. Reduce power lite turned on. Shut off engine and started back up - lite is off. Can it be driven?


Jerry, Drive to a good shop. So many things can cause reduced power light unfortunately. The first step would be to get the truck hooked up to a scanner/computer and have the computer scanned for trouble codes. One thing that you could try is to drain the water from the water separator that is mounted on the frame under drivers front door. If the PCM picks up on water, power is reduced until water is removed/drained. It could be an exhaust sensor that is reading faulty. Unfortunately from here its impossible to tell you exactly what the fault is because there are just so many engine sensor inputs that could cause your problem. Check the attached links, forums,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

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Dec 29, 2015 | 2008 Ford F-250 Super Duty

1 Answer

What does engine power reduced mean


This is a symptom of the on board computer detecting an issue with the engine / operability. It has placed the engine in limp or reduced power mode to minimize potential damage. You may see a check engine or service engine soon indication on the dash with this problem. Some auto parts stores can scan the car's computer to get the code(s) causing the the reduced power mode. Many times, this issue needs to be addressed by a mechanic however.

Apr 14, 2015 | Cars & Trucks

1 Answer

Problem with my stabilitrak


Stabilitrak doesn't reduce power to the engine. It disengages, no ABS. Reduced power is engine or transmission problems. Have the codes read..Repost

Nov 30, 2014 | 2009 Buick Lucerne

2 Answers

My 2006 2.2L hhr's engine is idoling up and down. the reduced engine power code is on. what do i do?


Nick;
Hopefully this does not reach you too late. This is a VERY simple fix!!
Disconnect the negative battery cable for thirty minutes. THATS IT!! This will reset the Engine Controle Unit (module), (computer), however you wish to state it.

Oct 02, 2012 | 2006 Chevrolet HHR

1 Answer

Engine power reduced, service traction


when you have the fault codes read to find the exact sensor failure or cause , have it fixed then reset the ecm as the ecm will reduce the performance(limp mode) for safety reasons

Jul 20, 2012 | 2008 Pontiac G6 Sedan

2 Answers

Reduced engine power whats wrong


Your ECM, or on board computer, will reduce engine power when it detects a problem that is potentially harmful to the engine. The only way to determine what caused the reduced power is to have the computer scanned for codes.Once you have the codes, we can diagnose the problem.You can have the engine scanned for free at just about any major auto parts store.

Mar 03, 2011 | 2006 Chevrolet Cobalt

1 Answer

Warning stating reduce engine power and something about stability


Reduced power mode is when the electronic ignition is strategically is not firing all the cylinders to prevent catastrophic failure of your engine. The reason for the GM Engineers put the reduced power mode in the vehicle is so you can drive the vehicle under 50Mph for about 50 miles to a mechanic before the vehicle completely dies.

Jul 01, 2010 | 2003 GMC Yukon Denali

2 Answers

What does Failsafe Engine Mode mean? my manual was stolen


Hello! Fail safe mode is when the vehicle's computer detects a serious problem an allows you to "limp" off the road or highway safely.

Fail safe mode on a Jaguar is mainly caused by a dirty and gummed up throttle body. The throttle body on your auto has a protective coating, so you can not use just any cleaner. It requires a throttle body cleaner that states "safe to use with a protective coating". The butterfly valve in the throttle body will actually "stick out". This causes fail safe mode to kick in reducing the amount of power your engine can produce.

Also check the plugs on your ECM (computer) and make sure they are all seated properly.


Guru...............saailer

Dec 13, 2009 | 1998 Jaguar XJ8L

1 Answer

I have a toyota rav 4 1996 & the engine warning light has just started to come on & the car loses power as soon as the light goes on & then the light will just go off & the car runs normal...


Does it loose power all together as if the engine shuts down or does it go itnto a reduced power state?

Check all of your fluid levels. Keep an eye on all of your other gauges when this happens. Some vehicles will automatically go to a reduced power state to protect itself from damage if overheating etc.

More likely, another simple problem could be a loose connection somewhere. Start by checking your battery terminals, and any connections under the hood that can vibrate loose. Typicallly if a problem just "goes away" suddenly. It is an electrical problem.

Oct 23, 2009 | 1996 Toyota RAV4

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