Skip the auto shop - Our mechanics make house calls

Q: Reduced engine power Fuel pressure sensor

asked by on

Hello my car is a 2008 chevrolet impala 3.5 flex fuel and every so often it will say reduced engine power and throw a code p0641 and I though it was the throttle body and I cleaned it out and reduced engine power never came back on however everytime the reduced engine power came up it will also throw a code po452 fuel pressure sensor low input I have been told the fuel pressure sensor is in the gas tank but I'm not sure why could this be happening

My car has 170000 miles.

A: The P0452 is for the fuel tank pressure sen...

The P0452 is for the fuel tank pressure sensor and not for the fuel pressure sensor for the engine. The fuel tank pressure sensor can be on if you had a loose gas cap or a evaporative emission system leak that could have caused the code. The code P0641 is a serious code concerning the throttle position sensor shorted to reference voltage. Your best bet would be to have a qualified technician, such as one from YourMechanic, inspect the Check Engine Light in person to determine exactly what repairs are needed.

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

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: On my 2015 chevy camero the engine light turn on i fix the problem will it go off byself

For some codes, the light will re-set (turn off) by itself, although it might re-set only after a certain number of ignition cycles. For ALL codes, though, whether you manually (using a code scanner) clear the code or not, the...

Q: Hissing noises coming from the gas tank area

Hey there. From your description, it sounds like you are hearing the Evaporative emissions system perform its routine checks. The computer will check the fuel tank and evaporative emissions hoses for leaks. If conditions are right, the pressure will build...

Q: 08 impala has engine power reduced light on. Car starts

Hello, Unfortunately, this is a common issue in many Impalas. This can happen when the catalytic converter is clogged or has also been known to happen when the traction control system has encountered an error. This light comes on as...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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.