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− − S6M6AAJK72100090420FAAT00 − − DTC P0420: YES NO 11-414 Catalytic Converter System DTC Troubleshooting Catalyst System Efficiency Below Threshold NOTE: If some of the DTCs listed below are stored at P0137, P0138: Secondary HO2S (Sensor 2) 1. Reset the ECM/PCM (see page 11-4). 2. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the 3. Test-drive at 50 55 mph (80 88 km/h) for about 2 minutes. Then decelerate for at least 4 seconds Check the three way catalytic converter (TWC). If necessary, replace the TWC. Intermittent failure, system is OK at this time. Is the test r esult F AIL? 05/06/27 17:42:37 61S6M040_110_0414 |