Seeing your check engine light illuminate on the dashboard can be worrying — especially if your car seems to be driving normally. While the light doesn’t always mean a serious issue, it’s your vehicle’s way of telling you something needs attention.

At Blenks Automotive & Performance, we regularly diagnose check engine light warnings for drivers in the local area. Here’s what your car may be trying to tell you — and what to do next.

The check engine light (also called the engine warning light or MIL) is part of your vehicle’s onboard diagnostic system. When the engine management system detects a fault, the light turns on to alert you.

This could be anything from a minor sensor issue to a problem that may affect engine performance, fuel economy, or emissions.

8 Common Reasons Your Check Engine Light Is On

It might sound simple, but a loose fuel cap can trigger the check engine light. It allows fuel vapours to escape, affecting the emissions system.

What to do: Tighten the cap until it clicks. If the light stays on after a few trips, have it checked.

Oxygen sensors measure how much oxygen is in the exhaust and help control fuel efficiency. When they fail, your car may burn more fuel than necessary.

Symptoms: Poor fuel economy, rough running
Best fix: Professional diagnostics and replacement

Spark plugs and coils are essential for proper combustion. If they’re worn or failing, your engine may misfire.

Symptoms: Shaking, hesitation, difficulty starting
Why it matters: Prolonged misfires can damage the catalytic converter

The catalytic converter reduces harmful emissions. Problems here can be expensive if ignored.

Symptoms: Reduced performance, rattling noise, sulphur smell
Tip: Regular servicing helps prevent converter failure

The MAF sensor controls the amount of air entering the engine. A fault can cause poor performance or stalling.

Symptoms: Hard starts, hesitation, poor fuel economy

Cracked hoses or leaks in the vacuum system can disrupt engine performance.

Symptoms: Rough idle, stalling, poor acceleration
Common cause: Age and heat degradation

Issues with the EGR valve or EVAP system can trigger the check engine light, even if the car feels normal to drive.

Why it matters: Emissions faults can affect fuel economy and compliance

Low voltage from a failing battery or alternator can cause warning lights to appear.

Symptoms: Difficulty starting, dim lights, multiple warning lights

Solid light: You can usually drive short distances, but you should book a diagnostic check as soon as possible.

Flashing light: Stop driving immediately. This indicates a serious issue that could cause engine damage.

Is It Safe to Drive with the Check Engine Light On?

If you’re unsure, it’s always safer to have it inspected.

Ignoring the check engine light can lead to:

Why You Shouldn’t Ignore the Check Engine Light

Early diagnosis often means a simpler and cheaper repair.

At Blenks Automotive & Performance, we use modern diagnostic equipment to accurately identify the cause of your check engine light. We’ll explain the issue clearly and recommend the best repair options — no guesswork, no unnecessary repairs.

Professional Check Engine Light Diagnostics

If your check engine light is on, book an inspection with our team and drive with confidence.

Have more questions about you check engine light?

While the check engine light doesn’t always mean a serious issue, it’s your vehicle’s way of telling you something needs attention.

Blenks Automotive & Performance Gives 8 Common Reasons Your Check Engine Light Is On

Your local Car Service Mechanic in Murray Bridge, Blenks Automotive & Performance take great pride in offering our clients the very best in car servicing and automotive repairs.

Conveniently located on Adelaide road right across from the Adelaide Road Motor Lodge motel, Blenks Automotive & Performance specialise in car servicing for all vehicle makes and models, including commercial fleet vehicles, four wheel drives and diesel vehicles.

Services at Blenks Automotive & Performance include log book servicing to all makes and models and all mechanical repairs, using the highest quality engine management systems and computer diagnostic equipment in Murray Bridge. Blenks Auto can also service your new car without affecting your New Car Warranty.

Expert car service from an award winning team

Customers of Repco Authorised Service dealer Blenks Automotive & Performance have long known about the superior customer service the local car service offers and now the word is out all over Australia. Recognising excellence in customer service, we have won a national award, and it is a well deserved accolade.

In the business of servicing and maintaining cars of all types and ages, this latest national award comes on the back of being named best Repco Authorised Service dealer in SA, and winning two awards at the Murray Bridge Business and Tourism awards, one for outstanding customer service, and the other recognising director Paul Blenkiron individually for outstanding customer service. Blenks Automotive & Performance joined forces with Repco Authorised Service in 2007, and being named the best from their 500 stores nationwide is no mean feat. Criteria for the award is predominantly via customer feedback and surveys, and it is clear the business is well known for its comprehensive and personalised service for which it prides itself.

Ask Paul what sets his business apart from others and he says it is having a team that takes pride in its work: "The little things make the difference, doing those little one percenters that add up to a complete customer service. Our guys really take pride in their work and I believe we have the best team in Murray Bridge, on experience and brainpower."

As a Repco Authorised Service centre, we have a firm commitment to high quality workmanship, ensuring the very best in automotive care. Our car service is a member of the Repco Auto Tech training program, ensuring each mechanic is kept fully up to date with modern vehicle repair methods. 

For friendly service from a trusted independent mechanic, rely on the team at Blenks Automotive & Performance

As your local Mechanic in Murray Bridge South Australia, Blenks Automotive & Performance take great pride in offering our clients the very best in car servicing and automotive repairs...

Automotive Servicing and Repairs in Murray Bridge

This WB came to us and it was in dire need of a restoration. 

 The owner had the vision of what he wanted and the team made it happen. 

Holden V8 ute, 5 speed manual, rack and pinion power steering, new A/C system, full rewire, custom interior. 

Thanks to this customer for allowing us to build your ute. We're happy that you're happy with the results.

If you're looking to upgrade or update your love, bring it in to our Murray Bridge workshop and we'll take care of you. 

This WB came to us and it was in dire need of a resto.

Holden WB UTE Restoration and repair in Murray Bridge

Is there a smell in your car? And no amount of air freshner seems to do the trick? It could be your cabin air filter!

Decreased Airflow: If you notice a significant reduction in airflow through your vents, even on higher settings, chances are your cabin air filter is clogged with dirt, dust, and debris.

Persistent Odours: An unpleasant smell that refuses to budge can be an indication that your cabin air filter is unable to effectively trap odorous particles, leaving your car's interior smelling musty or stale.

Allergy Aggravation: Frequent sneezing, itchy eyes, or other allergy symptoms experienced primarily during your car rides could point to an insufficiently functional cabin air filter, failing to filter out airborne allergens.

The vital importance of replacing your cabin air filter.

As responsible vehicle owners, we often focus on routine oil changes, tyre rotations, and brake inspections to ensure our cars are in tip-top shape. 

However, one often overlooked component, with detrimental consequences, is the cabin air filter.

You know your cabin filter is due when it catches your phone...

Or if your cabin air filter is collecting more than just dust...

Poor Vehicle Performance: A dirty cabin air filter impedes the flow of clean air to your car's HVAC system. This, in turn, burdens your blower motor and air conditioning unit, causing strain and decreasing their efficiency.

Health Risks: Apart from shielding your vehicle's vital components, the cabin air filter serves as your first line of defense against airborne contaminants. A clogged or damaged filter can allow harmful pollutants such as dust, pollen, bacteria, and even exhaust fumes to enter your car's cabin, jeopardising both your respiratory health and that of your passengers.

Given the above symptoms and impacts, it is crucial to replace your cabin air filter regularly, according to your vehicle manufacturer's recommended maintenance schedule. Doing so will:

Improve Air Quality: By investing in a fresh cabin air filter, you ensure that the air circulating within your vehicle is free from pollutants and allergens, enabling you and your passengers to breathe in cleaner, healthier air.

Prolong HVAC System Lifespan: A clean and efficient cabin air filter promotes proper airflow, which ultimately reduces strain on your car's blower motor and air conditioning unit, potentially extending their longevity and minimising repair costs.

Enhance Overall Driving Experience: Riding in a vehicle with fresh, filtered air not only contributes to your comfort but also aids in maintaining concentration and alertness, improving your overall driving experience.

At Blenks Automotive & Performance we check your cabin air filter as part of our free Vehicle Inspection report which you can request with every full car service.

Book online, or come see the team at our Murray Bridge workshop today to get your cabin air filter checked and replaced.

Cabin air filter inspection and replacement in Murray Bridge

To help you understand Log Book servicing and learn more about Blenks Automotive & Performance in Murray Bridge, please read the questions and answers below:

Blenks Automotive & Performance share their customers frequently asked questions about Log Book servicing

Frequently Asked Questions about Log Book servicing in Murray Bridge

Frequently Asked Questions about Log Book servicing 

Whether it is called a major car service, a basic car service or a log book service, or a major or minor repair we can service your car here in our Murray Bridge workshop.  Come and visit the car servicing experts at Blenks Automotive & Performance today.

For the best car service, book online now or call us today to make a booking. Our Blenks Automotive & Performance technicians are qualified to carry out car servicing and repair work on all makes and models using quality parts and the latest diagnostic equipment. You can rest assured that car service work performed by our Auto-Tech trained staff will keep your car in top condition and will maintain your statutory new car warranty.

For the best car service, book online now or call us today to make a booking.

Log Book service in Murray Bridge

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Blenks Automotive & Performance take great pride in offering their clients personalised, and friendly service at all times. 
		
Conveniently located in Murray Bridge, the business is a member of the Repco Auto Tech training program, ensuring their technicians are kept fully up to date with modern vehicle repair methods. 
		
Blenks Automotive & Performance have a wealth of experience in servicing all makes and models, including commercial fleet vehicles. As a Repco Authorised Service centre, they have a commitment to high quality workmanship, ensuring the very best in automotive care.


Blenks Automotive & Performance

Full Car Service and Log Book Service

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