‘I’m a mechanic – petrol and diesel drivers are in trouble if button flashes’

What to do when your check engine light comes on and flashes

Petrol and diesel drivers are in serious trouble if one car button light flashes on a dashboard, according to leading mechanic Scotty Kilmer.

He warned motorists are likely to have a “big” problem if the check engine light is continually flashing. 

Mr Kilmer has stressed this indicates the vehicle has an issue which could destroy a catalytic converter which could lead to costly repairs.

Speaking on YouTube, Scotty said: “Today I’m going to show you what it means if your check engine light is flashing on and off. 

“When your check engine light comes on that means there’s a trouble code stored in the computer and that there’s a problem. 

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“But, these problems can be big or little. When they flash on and off it means they’re big enough to ruin your catalytic converter. 

“So if your check engine light is flashing on and off it’s a good idea to have it canned and fix the problem and then pray it’s something simple like a misfire from a bad ignition.”

Experts at carwow have also warned that a flashing light is not good news for owners.

He explained: “A flashing orange light means that there is a problem that could affect how the car drives or handles, such as an engine misfire. 

“You might be able to feel your car shake, or the engine could suddenly sound different. If this light comes on, you should take your car to be inspected immediately.”

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Recovery experts at the AA made it clear that engine management lights will only flash if there is a “potentially serious issue” with a vehicle. 

They said a flashing amber light is a lot worse than a steady amber engine light and should be checked out as soon as possible.

They added: “A flashing amber light is a more serious issue than a steady amber light, and could mean there’s a critical problem with the catalytic converter (along with a number of other issues). 

“Without immediate action you could face a seriously costly repair, so make sure to have your car checked by a mechanic immediately.”

BookMyGarage said the average catalytic converter replacement is between £150 and £800. 

A new part can even cost more than £1,000 in some more expensive models. 

A damaged catalytic converter will likely result in a failed MOT test in an extra headache for road users.

This is because catalytic converters help limit toxic vehicle emissions which is a key check on the annual exam.

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