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P0430-CATALYST 2/1 EFFICIENCY (CONTINUED) 2. VISUALLY INSPECT CATALYTIC CONVERTER Inspect the Catalytic Converter for the following damage. Damaged Catalytic Converter, dents or holes. Severe discoloration caused by overheating the Catalytic Converter. Catalytic Converter broken internally. Leaking Catalytic Converter. Were any problems found? Yes >> Replace the Catalytic Converter. Repair the condition that may have caused the failure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 3 3. EXHAUST LEAK Start the engine. Inspect the exhaust for leaks between the engine and the 2/1 O2 Sensor. Inspect the exhaust for leaks between the engine and the 2/2 O2 Sensor. Are there any exhaust leaks? Yes >> Repair or replace the leaking exhaust parts as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 4 4. ENGINE MECHANICAL Check the exhaust for excessive smoke caused by an internal problem in the engine. Is an engine mechanical condition present? Yes >> Repair the engine mechanical condition as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 5 5. AGING O2 SENSOR A new rear O2 Sensor along with an aging front O2 Sensor may cause the DTC to set. Review the vehicles repair history. Has the rear O2 Sensor been replaced without replacing the front O2 Sensor? Yes >> Replace the 2/1 O2 Sensor as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 6 6. CATALYTIC CONVERTER If there are no possible cause remaining, view repair. Repair Replace the Catalytic Converter. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 476 ENGINE ELECTRICAL DIAGNOSTICS WK |