Skip the auto shop - Our mechanics make house calls

Q: EGR codes P0489 and P042E.

asked by on

The Engine light is on. I get EGR codes P0489 and P042E.

A: These codes are for EGR low flow and and a ...

These codes are for EGR low flow and and a EGR valve being stuck open. Sounds to me like carbon buildup has wedged the valve open and further blocked flow through it. Have a certified mechanic, like one from YourMechanic, verify the valve is clogged and replace the EGR valve 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・Save up to 30%

Get a quote

What others are asking

Q: Battery draining after new alternator installed

Hi, thanks for writing in. It's very common for mechanics to forget to replace alternator sensors or charging wires to the battery when they replace the alternator. However, one other item that directs the flow of electricity to the battery...

Q: My truck was running perfectly yesterday, but this morning it won't start.

When you attempted to start the vehicle this morning, did the starter attempt to crank the engine? If not, the issue is likely the starter. Although they can display signs of wearing out, they can also stop working suddenly. If...

Q: Rear power lift gate only opens 1/3 of the way

Hello! The glass door button is a serviceable item, though it may likely fall under a bodywork category. A mechanic can check the door operation, alignment, and physical components for signs of wear or damage. A slight misalignment can cause...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...