Skip the auto shop - Our mechanics make house calls

Q: Check engine light and code p0089

asked by on

I took my car to mechanic and he replaced my fuel pump and hpfp. So i drove 120 miles and when i accelerate at a high rpm my check engine light comes on and blinks. I put the odb reader on it and it says p0089 (fuel pressure regulator performance). Iv also noticed that my fuel gauge hasnt moved and iv been driving it all day. It stays at full. Im running out of options iv been googling things and asking around but there all dead ends

My car has 82100 miles.
My car has an automatic transmission.

Hello. I would verify to check that the fuel pressure regulator and fuel pressure sensor on your vehicle are in proper working order. Any problems with those can set off the P0089 code.

If those check out, I would move on to verifying that the fuel pump is in good working order. As a faulty or low quality fuel pump may also be possible reasons as to why your fuel pressure is not correct, and your gauge is not reading accurately. If you need assistance with these checks, feel free to contact a certified mechanic who can diagnose your Check Engine Light codes and replace your fuel pump if necessary.

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!

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: The plastic parts inside of the the car make noise when I drive the car over rough roads.

A quieter ride can be accomplished a few different ways. Most beneficial to you is going to be making the vehicle ride smoother. The plastic creaking sounds are coming from bumps and engine vibrations. Engine vibrations are typically minimal with...

Q: Rear end vibrates to one side

Hi there. When a rear end issue occurs like you've described, it can range from wheel bearing failure to issues with rear shocks or strut mounts - even a stabilizer bar. It's always best to eliminate the guess work by...

Q: Speedometer stopped working, how do I repair it? 2003 Audi A6

Hello - most likely the speedometer sensor has failed, or the wiring to it has become disconnected. Check that first. It's also possible that the speedometer sensor drive gear has failed (small plastic gear), or the instrument panel speedo gauge...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...