LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2000 >> Firebird Formula, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 5.7L >> Diagnostic Tests >> DTC P0430: Catalyst System Low Efficiency - Bank 2 >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD system check, go to next step.
  2. If any other DTCs are present, diagnose affected DTCs first. If other DTCs are not present, go to next step.
  3. Check that three-way catalytic converter is original equipment. Check for converter damage and rattle inside converter. Inspect for exhaust system leak, especially near HO2S. Ensure HO2S connectors are secured and not touching exhaust. If damage to converter is obvious, go to next step. Repair other exhaust leaks. After repairs, go to step  5.
  4. Replace catalytic converter. After replacing catalytic converter, go to next step.
  5. Using scan tool, select DTC, CLEAR INFO function. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter this DTC. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step  2.
  6. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test.
scientia non olet · About LEMON Manuals