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.
1998 Oldsmobile Cutlass BaseFACTORY OEM SERVICE PROCEDURE
DTC U2000: Invalid BFC Transmitted SPI Data: Testing
- If BFC diagnostic system check was performed, go to next step. If BFC diagnostic system check was not performed, see procedures in BFC DIAGNOSTIC SYSTEM CHECK .
- Diagnose and repair DTC U2001 through U2007. If repair is complete, go to step 5). If repair is not complete, go to next step.
- Using scan tool, check DTCs. If DTC U2000 is current and DTCs U2001-U2007 are not current, go to next step. If DTC U2000 is current and DTCs U2001-U2007 are also current, go to step 2).
- Replace BFC. See REMOVAL & INSTALLATION . Go to next step.
- Clear DTCs. Perform BFC DIAGNOSTIC SYSTEM CHECK .
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:
- • 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.