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Geely EC718, EC718RV, EC715, EC715RV. Manual part - 41
(c) Clear DTC code. (d) Start and run the engine at idle speed to warm up the engine (e) Road test the vehicle for at least 5 min. (f) Read control system DTC code again to confirm that the Next Step 6 Diagnostic completed. 2.2.7.15 DTC P0030 P0031 P0032 P0053 1. DTC Descriptor: DTC P0030 Pre-Catalytic oxygen sensor heating control circuit open DTC P0031 Pre-Catalytic oxygen sensor heating control circuit short to ground DTC P0032 Pre-Catalytic oxygen sensor heating control circuit short to power supply The Pre-Catalytic heated oxygen sensor (HO 2 S) is used for fuel control. The sensor compares the oxygen content in ambient air with the oxygen content in exhaust flow. Each heated oxygen sensor has an internal heating element for sensor heating. ECM The Pre-Catalytic heated oxygen sensor heating coil voltage is provided by The Main Relay, which is controlled by ECM. When the 2. Conditions For Setting DTC and The Fault Location: DTC Code DTC Detection Strategy Conditions For Setting The DTC (Control Strategy) Fault Locations P0030 Hardware Circuit Checks 1. Circuit Open. 2. Circuit Short to Ground. 3. Circuit Short to Power Supply. 1. Sensor Circuit 2. Sensor 3. ECM P0053 Resistance is greater than the 1. The current Pre-Catalytic oxygen sensor internal resistance is greater than 1500 Ω. 2. The current exhaust gas temperature is between 200°C (392 ºF) and 550°C Engine Control System JL4G18-D 2-79 |