2001 Volvo S40FACTORY OEM SERVICE PROCEDURE

1.8L Turbo Readiness Code

VAG 1551 scan tool is necessary for clearing codes. Follow manufacturer's instructions for clearing codes. After clearing codes, it is necessary to generate a PCM readiness code. A readiness code resets specific values to zero. Follow scan tool manufacturer's instructions for generating a readiness code.

NOTE: On A4 1.8L turbo and A6 models, it is necessary to adapt the throttle valve control module to ECM if ECM memory is cleared or ECM is disconnected from battery voltage. Turn ignition on (engine off) for 10 seconds.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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