Q: Engine fault warning lamp flashing

asked by on

Engine is getting switched off when I drive on A/C ON

My car has 18 miles.
My car has a manual transmission.

Hey there. This may suggest a short or potentially a bad fuse or relay problem related to your AC. Your car’s computer has what is known as a "fail safe" default that is engaged when the computer detects an electrical short or many other faults in the various systems in the car. When this fault is detected, the "fail safe" is engaged and depending on the type of fault, the computer will cut power to the engine preventing further damage. When this happens, as you have noticed you will have a Check Engine Light on. When this happens, the computer will register specific fault codes which can be downloaded to determine the cause of the fault or error. I would recommend having an expert from YourMechanic come to your location to diagnose the codes and repair this issue accordingly.

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
  1. Home
  2. Questions
  3. Engine fault warning lamp flashing

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: Wont start right away, won't turn over, lights come on, eventually works.

What you are describing sounds like a faulty starter solenoid. If you hear a clicking sound when turning the key, it is likely that your starter solenoid may be faulty. The starter solenoid is located on the starter and has...

Q: My battery light comes on when braking and every once in a while while driving?

Hi there. Sounds like a battery terminal is loose and becomes slightly disconnected when the car is shifted forward during braking. Check the battery cables and make sure that they are tight on the battery terminals. If the battery cables...

Q: 2006 Ford Mustang has check engine light on

There are countless potential causes for your illuminated check engine light. The mechanic manually turned off the light, but it came back on because the problem has not been fixed. The first place to start is retrieval of the stored...

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...
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 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...