Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 98 (1.9L - FUEL INJECTION GLOW PLUG, ENGINE CODE: ALH (A4 PLATFORM))23 DIESEL FUEL INJECTIONDIESEL DIRECT FUEL INJECTION (DFI) ENGINE CONTROL MODULE (ECM) -J248DIESEL DIRECT FUEL INJECTION (DFI) ENGINE CONTROL MODULE (ECM) J248 , REPLACINGINSTALLING
2002 Volkswagen Golf GLS, 2.0 K, Standard
Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , replacing: Installing
2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Installing
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 Volkswagen Jetta, 2001 Volkswagen Golf, 2000 Volkswagen Jetta, 2000 Volkswagen Golf, and 1999 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- Place new Engine Control Module (ECM) J248 into retaining frame.
- Install Engine Control Module (ECM) J248 connector and lock.
- Check previous code and new Engine Control Module (ECM) J248 code → Engine Control Module (ECM) J248 coding
- Check DTC memory, if necessary, repair malfunctions and erase DTC memory → Diagnostic Trouble Code (DTC) memory, checking and erasing .
- Set readiness code → Readiness code, setting
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.