Q: Car overheats; P1491 engine code

asked by on

The car keeps overheating. Also, there is a P1491 engine code.

The code you received says it may be a problem with the cooling fan relay or circuit. This may be the cause of the overheating. Some owners had to just replace the cooling fan relay and others had a wiring issue with the fans. I recommend you have a mechanic like one from YourMechanic inspect your vehicle’s overheating issue to find out what needs to be fixed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Car overheats; P1491 engine code

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: Q: Vehicle will start but turns off when put into gears

Hello, thank you for writing in. When the transmission is put into gear, the engine is demanded to work under slightly different conditions. It is these changes that are likely triggering the engine to stall. The Torque converter lock up...

Q: Radiator fan making noise when running

The fan motor turns very fast, and these motors do go bad after continued use; five or six years is a good life span, you made it nine years. I recommend having a mechanic such as one from YourMechanic, inspect...

Q: Q: Steering wheel loose.

I would start with a vehicle inspection from a YourMechanic technician. Ensure that the technician inspects the intermediate shaft, steering gearbox, and all joints associated with the steering system. If any parts are found to have looseness or play, they will...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...