Check Engine Light
Is a dashboard warning that your vehicle’s computer has detected a problem with the engine, emissions system, or another related component
Check Engine Light
Check Engine Light
TheĀ “engine light”Ā (also called theĀ Check Engine LightĀ orĀ CEL) is a warning indicator on your vehicle’s dashboard that illuminates when the car’s onboard computer (theĀ Engine Control Unit or ECU) detects a problem with the engine, emissions system, or other critical components.
What does it mean when the engine light comes on?
Solid Yellow/Orange LightĀ ā Indicates aĀ non-urgent issueĀ that should be checked soon. Examples:
Loose or faulty gas cap
Minor sensor malfunction (O2 sensor, MAF sensor)
Emissions system problem
Small exhaust leak
Flashing Red/Yellow LightĀ ā Signals aĀ serious problemĀ requiringĀ immediate attentionĀ (to avoid engine damage). Possible causes:
Severe engine misfire (damaging the catalytic converter)
Major ignition or fuel system failure
Critical sensor failure
Common Causes of a Check Engine Light:
Loose or faulty gas capĀ (one of the most common reasons)
Failing oxygen (O2) sensorĀ (reduces fuel efficiency)
Catalytic converter issuesĀ (expensive if ignored)
Spark plug/ignition coil problemsĀ (causing misfires)
Mass Airflow (MAF) sensor failureĀ (affects air-fuel mixture)
Exhaust system leaksĀ (EVAP system leaks)
Engine timing or fuel system issues
What Should You Do?
If the light is solid:
Check the gas cap first (tighten or replace it).
Use anĀ OBD-II scannerĀ (available at auto parts stores) to read the trouble code.
Schedule a diagnostic with a mechanic if the light stays on.
If the light is flashing:
Pull over safelyĀ if driving (to avoid engine damage).
Tow the car to a mechanicĀ for immediate inspection.
Ignoring aĀ flashingĀ Check Engine Light can lead toĀ expensive repairsĀ (like a destroyed catalytic converter or engine damage). Even aĀ solid lightĀ should be checked to prevent long-term issues.
find a workshop near you
Have your Car Diagnosed today. Book your Appointment
Don’t let a faulty Car Engine Light affect your drive. Schedule your car appointment with an e-CAR branch and experience the difference professional service makes.
Explore our services
Car service
Car repairs
Full list of repair services
Fleet Maintenance
Service a fleet of cars or trucks with a fast turnaround time.
Truck Services
Professional servicing tailored to trucks and heavy-duty vehicles.
Car Accessories
Upgrade your car with premium car accessories.
Approvals & accreditations
Trust
e-CAR is accredited with RMI, MIWAĀ approvals, and Right 2 Repair Supporter in SA for top-quality vehicle servicing and workmanship that meets industry standards.
Genuine car parts from our top brands
Terms and Conditions apply.
Please note that not all service centres offer the full range of services, and available services may vary between locations. We recommend confirming with your chosen service centre prior to booking your vehicle.
