Skip the auto shop - Our mechanics make house calls

Q: i have the engine power reduce light on with no other light or fault codes

asked by on

this not happen all the time yesterday the check engine light lit and trouble codes about injectors 2 5 8 tell that circuit is shorted to battery i clear out the codes and today only the engine power reduce came on with no codes

Hello, thank you for writing in. The reduced power light can illuminate for several reasons. To begin you will want to give the car some more time to see if the other codes come back. If they do not, you will want to look into possible causes for the loss of power. First use any other driving symptoms you are having to help you. If electronics are having issues, then go to the battery and charging system. If the engine seems to be struggling, look into the spark and fuel systems. Considering the first codes pertained to the ignition system, focus on the spark plugs and their circuits. For further diagnostic help, contact our service department to schedule an appointment.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • i have the engine power reduce light on with no other light or fault codes

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Will a bad O2 sensor damage my car's computer?

The engine control unit (ECU) is a possible cause of the O2 sensor fault codes but not the most likely. Your vehicle is equipped with 4 O2 sensors. Bank 1 is the driver's side. Bank 2 is the passenger side....

Q: My engine light came on code shoed P0037 its a Lexus is300 is it just changing the o2 sensor?

P0037 is an oxygen sensor code referring to bank 1 sensor 2. This is the right hand side of the engine and the second sensor on that side. The code may be caused by the catalyst on that side or...

Q: My car needs service..but I don't know where to start. My brake light is on..but i just did the brakes 2months ago and my engine l

You should have the computer and ABS systems scanned for codes to get an idea of the problem you may be having and then a repair can be made. If you want a mechanic like one from YourMechanic to come...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.