Citroen C3 III (2016 - 2024) warning lights: check engine or AdBlue warning light on
Is the check engine light, another amber warning light or a persistent AdBlue warning light on in your Citroen C3 III (2016 - 2024)? This page lists supported warning lights (engine, AdBlue / emission control, oil service) and shows how to read and clear fault codes with the klavkarr OBD2 diagnostic scanner. Run the diagnostic yourself before booking a garage visit.
Engine
Particulate Filter (DPF/PF)
AdBlue
Maintenance / Oil Reset
Transmission
ABS
ESP Electronic Stability Program
Airbag
Engine
Particulate Filter (DPF/PF)
AdBlue
Maintenance / Oil Reset
Transmission
Technical specifications for your Citroen C3 III (2016 - 2024)
Citroen engine versions tested by our customers. The scanner may still support fault code reading and clearing if your version is not listed; check its compatibility before purchase.
| Engine | Year | Fuel type | Power | Recommended scanner |
|---|---|---|---|---|
| 1.2 VTi EB2FBProtocol: CAN 11bit 500kb |
2016 | Gasoline | 68 | View scanners Citroen C3 III |
| 1.6 BlueHDiProtocol: CAN 11bit 500kb |
2017 | Diesel | 75 | |
| 1.2 12V PureTechProtocol: CAN 11bit 500kb |
2018 | Gasoline | 82 | |
| 1.5 Hd iDV5RDProtocol: CAN 11bit 500kb |
2018 | Diesel | 100 | |
| 1.2 THP EB2ADTProtocol: CAN 11bit 500kb |
2016 | Gasoline | 110 |
Frequently asked questions about C3 III warning lights
AdBlue, oil service, ABS and the check engine light, explained.
Why does the AdBlue warning light stay on after a refill?
If the AdBlue warning light stays on after refilling your Citroen C3 III, the system may not yet have registered the refill, or there may be a fault with the AdBlue dosing system or its electronics. Some vehicles need to be driven for several kilometres before the display updates. In other cases, diagnosis, repair or a supported reset with a tool such as klavkarr may be needed.
See the procedure for resetting the AdBlue warning light on a Citroen C3 III.
How do you reset the oil service light on your Citroen C3 III?
With klavkarr and its dedicated app, you can access the car's control unit and reset the service reminder after changing the oil, where this function is supported. This prevents the reminder from staying on after maintenance is complete.
Read our article on resetting the oil service light on a Citroen C3 III.
Why does the ABS warning light stay on?
It usually indicates an anti-lock braking system fault: a faulty wheel speed sensor, damaged ABS encoder ring, broken wiring or a problem with the hydraulic unit. Electronic diagnostics identify the code stored by the ABS control unit, helping you target further checks and repairs.
Why is the check engine light on?
It indicates a potential engine or emission-control problem, ranging from a minor fault to a more serious malfunction. A diagnostic scan with a klavkarr scanner for Citroen C3 III helps you investigate the cause before deciding what to do.
What exactly is an engine fault?
It can range from a minor issue to a serious malfunction that affects petrol or diesel engine performance or, in the worst case, causes permanent damage.
Would you like to understand the meaning of the warning message about the faulty anti-pollution system appearing on your C3? Head over to our blog.
What should you do if a warning light comes on in your Citroen C3 III?
If an engine, airbag, ABS, ESP or other warning light comes on, act cautiously and follow your vehicle handbook. A compatible diagnostic scanner can read the stored fault information and help you investigate the cause.
Professional-style diagnostics at home
Based in Vannes since 2009, we make car diagnostics accessible to everyday drivers with our klavkarr scanners, made entirely in France, and EOBD Facile software.
Plug and play on Windows or Mac computers and smartphones. Join our community of more than 100,000 users.
Other Citroen models compatible with klavkarr
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