19-25 Electrical System Troubleshooting z Error code 01-6 (O 2 sensor heater open abnormality) Related portion R/B EFI Main relay Probable cause c O 2 Sensor defect d Harness defect e Engine controller defect Error code 01-6 Connector contact defect O 2 sensor defect Harness defect Harness defect Engine controller defect Section 19 Engine controller A35 EFI main relay AC2 C1 9 2 O2 REC TAB 6 (HT) 1 1 sensor EFI main relay O2 sensor C E TAB 1 1 R Disconnect the battery negative terminal (for more than 10 seconds), after inspecting and correcting disconnection and water entry of C1, AC2, reconnect all connectors and battery negative terminal, turn the ignition key switch ON (start the engine), and check whether or not there is an error.
c Turn the ignition key switch ON. (Start and run the engine for more than 10 seconds.) d Turn the ignition key switch OFF for more than10 seconds. e Turn the ignition key switch ON. (Start and run the engine for more than 10 seconds.) f Check for errors. No error Error Inspection 1: O2 sensor individual inspection OK Inspection 2: O2 sensor heater power voltage inspection OK Inspection 3: Harness continuity and short circuit inspection OK