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What does engine power reduced mean - Cars & Trucks

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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.

Posted on Apr 15, 2015

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Posted on Jan 02, 2017

johnjohn2
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SOURCE: need to know what the "reduced engine power' MIL

this is one of two things, first theres a problem with the engine , the way it runs its loosing power or if the wheels spin and the computer picks it up then it will reduce the power to avoid wheels from slippping, this is like when driving in the snow, now if the check engine light is coming on with this message then you have a problem and the first thing to do would be to have the codes pulled and see what codes are stored. what happens is the computer sees a problem and turns on the light and stores a code for that problem. for example there may be a code that reads po300 multiple misfires. this code would mean the computer has seen the motor misfiring and with some testing the problem can be found. there are many auot part stores that will scxan the computer for free and give you a read out with the code. if you get the codes i can help you further, have a good day.

Posted on Mar 18, 2011

  • 396 Answers

SOURCE: reduce engine power 2007 chevy uplander

Sopunds like the computer has gone into a limp mode. You need to take it in for a professional diagnosis.

Posted on Jan 16, 2010

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Traction control and reduced engine power


What make , model year and engine size ? Reduced engine power usually means thier is a fault with the electronic throttle control an when thier is a problem it will disable traction control . This will turn on warning lights on the instrument cluster .

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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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Reduced Engine Power
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1 Answer

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1 Answer

WHat does it mean when your traction control indicator comes on and says it has reduced your engine power?


Hello Jeremy.
When your traction light comes on it is indicating wheel spin on acceleration. To prevent wheel spin an onboard computer reduces engine power to limit the wheel spin. Some, if not most, cars equipped with this feature will also apply the brakes if wheel spin continues after reducing engine power.
Hope this answers your question.
Thank you for using Fixya!

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1 Answer

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