Alfa Romeo 156 (2002 - 2003) warning lights: check engine or oil service light on
Is the check engine light or another amber warning light on in your Alfa Romeo 156 (2002 - 2003)? This page lists supported warning lights (engine, oil service, ABS) and shows how to read and clear fault codes with the klavkarr OBD2 diagnostic scanner. Investigate the fault before a garage visit or a vehicle inspection.
Engine
Particulate Filter (DPF/PF)
Stop & Start System
Maintenance / Oil Reset
Transmission
ABS
ESP Electronic Stability Program
Airbag
Engine
Particulate Filter (DPF/PF)
Stop & Start System
Transmission
Technical specifications for your Alfa Romeo 156 (2002 - 2003)
Alfa Romeo 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 |
|---|---|---|---|---|
| 1.9 JTDProtocol: ISO 9141 | 2003 | Diesel | 105 | View scanners Alfa Romeo 156 |
| 1.9 JTDProtocol: ISO 9141 | 2000 2002 2003 |
Diesel | 110 | |
| 1.9 jtdProtocol: KWP FAST | 2003 2004 2005 |
Diesel | 116 | |
| 1.6Protocol: KWP FAST | 1999 2001 |
Gasoline | 120 | |
| 1.9 JtdProtocol: KWP FAST | 2004 2005 |
Diesel | 126 | |
| 2.4 jtdProtocol: ISO 9141 | 2000 | Diesel | 136 | |
| 1.9 Jtd 16VProtocol: KWP FAST | 2003 2004 2005 |
Diesel | 140 | |
| 2.4 JtdProtocol: ISO 9141 | 2002 | Diesel | 150 | |
| 1.9 JtdProtocol: KWP FAST | 2003 2004 2005 2006 |
Diesel | 150 | |
| 2.0Protocol: KWP FAST | 2003 2004 |
Gasoline | 165 | |
| 2.4 Jtd 20vProtocol: KWP FAST | 2004 2005 |
Diesel | 175 | |
| 3.2 V6Protocol: KWP FAST | 2002 | Gasoline | 250 |
Frequently asked questions about 156 warning lights
AdBlue, oil service, ABS and the check engine light, explained.
How do you reset the oil service light on your Alfa Romeo 156?
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 Alfa Romeo 156.
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 Alfa Romeo 156 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.
What should you do if a warning light comes on in your Alfa Romeo 156?
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 Alfa Romeo models compatible with klavkarr
In the press
