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Engine malfunction reduced power - 323 BMW Cars & Trucks

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6ya6ya
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Posted on Jan 02, 2017

vinniepow31
  • 45 Answers

SOURCE: engine malfunctioned reduced power

this could be your head gasket ,,your car might be mixing oil with water,,open oil cap and check back of oil cap if there is white grey sludge,your head gaskets on its way out,your car will lose power,it will overheat alot then it will stop,very dear to fix

Posted on Jun 18, 2010

johntunney
  • 887 Answers

SOURCE: Trying to jump start a 2006 750 Li BMW. Lights turned on after 40mins but car still won't start. Dashboard help screen says engine malfunction due to reduced power.

the ground wire needs to go to a better ground then the strut bolt. find a better thick piece of steel on the engine to ground. those cables look very thin. It should start right away not after 40min. your boosting not charging the battery. if you cant get it started with a better ground location try a thicker set of cables and make sure the other car is running. if this fails your battery needs to be replaced

Posted on Mar 18, 2013

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Dec 10, 2012 - Tech Tip: Reduced Engine Power Message Displayed on GM Vehicles ... Model year 2008-'10 vehicles must have the engine control module (ECM) reprogrammed ... Do not drop the electronic throttle control components.

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Trying to jump start a 2006 750 Li BMW. Lights turned on after 40mins but car still won't start. Dashboard help screen says engine malfunction due to reduced power.


the ground wire needs to go to a better ground then the strut bolt. find a better thick piece of steel on the engine to ground. those cables look very thin. It should start right away not after 40min. your boosting not charging the battery. if you cant get it started with a better ground location try a thicker set of cables and make sure the other car is running. if this fails your battery needs to be replaced

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1 Answer

P2122


There are MANY engine control malfunctions that can cause the engine control system to default to "Reduced Power Mode".

Reduced Power Mode is simply a computer strategy that was created by the vehicle manufacturers to keep people from doing dumb things like continuing to operate the vehicle with the "Check Engine" or other warning lamps YELLING at them to get their car properly diagnosed and repaired. Reduced Power Mode is also designed to protect the vehicle from further damage in certain cases.

Ignoring the warning lamps can cause safety issues as well as damage HIGH DOLLAR parts like catalytic converters, which the vehicle manufacturers are responsible for due to Federal Emissions and Safety laws.

As for whether it is covered under warranty....
Many major components of your engine control system are covered under the Federally-Mandated 8-Year 80,000 mile emissions warranty. The ONLY way to find out if your particular failure is covered is to have the vehicle first diagnosed to determine what is CAUSING the failure. Then you must check with an authorized dealer to see if the part (or parts) causing the problem are covered.

May 13, 2012 | 2011 Chevrolet Impala

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