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P0037, P0038, P0057, P0058 HO2S2 HEATER EC-559 < COMPONENT DIAGNOSIS > [VQ40DE] C D E F G H I J K L M A EC N P O 4. Turn ignition switch ON. 5. Turn ignition switch OFF and wait at least 10 seconds. 6. Start the engine and keep the engine speed between 3,500 rpm and 4,000 rpm for at least 1 minute under 7. Let engine idle for 1 minute. 8. Check 1st trip DTC. 9. If 1st trip DTC is detected, go to WITH GST Follow the procedure “WITH CONSULT-III” above. Diagnosis Procedure INFOID:0000000005273518 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten three ground screws on the body. Refer to OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. CHECK HO2S2 POWER SUPPLY CIRCUIT 1. Disconnect heated oxygen sensor 2 harness connector. 2. Turn ignition switch ON. BBIA0539E BBIA0540E |