2002 Volkswagen EuroVan BaseFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code (DTC), Table

WARNING: Following repair work, always check DTC Memory of Engine Control Module (ECM) and erase DTC Memory contents "Engine Control Module (ECM) deactivated", check other stored DTC's and repair malfunctions if necessary.
  • DTC Memory stores all static and sporadic malfunctions: If a malfunction occurs and persists for at least 2 seconds, it is identified as a static malfunction.
  • Static malfunctions that are no longer detected 2 minutes after driving cycle has begun (ignition on at least 2 seconds) are stored as sporadic. "/SP" will appear at right on scan tool display.
  • Sporadic malfunctions which are not detected again within 50 driving cycles (ignition on at least 2 seconds) are erased automatically.
  • The following list contains all malfunctions that can be recognized by the control module for anti-theft immobilizer J362 and displayed by the VAS 5051 Vehicle Diagnostic Testing and Information System. The malfunctions are listed in order according to their 5-digit numbers.
  • Before replacing a component shown as malfunctioning, check the wiring and connections to the component as well as the ground (GND) connections according to wiring diagram.
  • Check engagement and proper seating of harness connectors on relay carrier.
  • After repairs, check DTC Memory again, erase and then check again.
DIAGNOSTIC TROUBLE CODES

DTC Description Figure
No Malfunction Recognized Indicated After Repair Work Completed ....
01128 Anti-theft Immobilizer Sensor D2 Fig 1
01176 Key: Signal too small/Not Authorized Fig 1
01177 Engine Control Module (ECM) Not Authorized Fig 2
01179 Incorrect Key Entry Fig 2
01202 Diagnostic wire: Short circuit Fig 3
01237 (1) Fuel cut-off valve Malfunctioning Fig 3
01312 Drive Train Data Bus Faulty Fig 4
01314 Engine Control Module (ECM): No communication Fig 4
65535 Control module Malfunctioning Fig 5
(1) Not for US or Canadian models.
Fig 1: DTC 01128 & 01176 Diagnosis
G00387982Courtesy of VOLKSWAGEN UNITED STATES, INC.
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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.

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