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HOMESERVICE MANUALSVOLVO1993850 L5-2.4L VIN 55 B5254SREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSABS CODES (ANTILOCK BRAKE SYSTEM CONTROL MODULE)DTC 4-1-X, 4-2-1, 4-2-2, 4-2-3 [EG]PROCEDURESCHECK CONTROL MODULE [EG8]
1993 Volvo 850 L5-2.4L VIN 55 B5254S

Check Control Module [EG8]

1993 Volvo 850 L5-2.4L VIN 55 B5254SSECTION Check Control Module [EG8]


Check Control Module
- Ignition off.
- Replace connector, control module etc.
- Ignition on.





- Erase any DTCs.
- Quit DTM by switching off ignition.

NOTE: Before test driving, switch ignition off to quit DTM. If car speed exceeds 10 km/h (6 mph) while diagnostics are on, the control module will cut the ABS system out.





- Test drive car as per FB. Test drive. Test Driving [FB]

If DTC does not reoccur:
- DTC was due to poor contact in control module connector. Check control module and hydraulic unit connector C/ED for contact resistance and oxidation as per HA6. Contact Resistance and Oxidation [HA6]

If DTC reoccurs:
- Check control module is working properly EG9. Checking Control Module Is Working Properly [EG9]
RENDER: 1.0x

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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.