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Geely Emgrand X7. Manual part - 50
2.2.7.24 DTC P0137 P0138 P0140 1. DTC description: DTC P0137 Rear Oxygen Sensor Circuit Short to Low Voltage
DTC P0138 Rear Oxygen Sensor Circuit Short to High Voltage
DTC P0140 Rear Oxygen Sensor Circuit Open After the vehicle started, ECM works in open-loop mode, in which ECM ignores the heated type • ECM provides a signal through ECM harness connector EM01 terminal No.48 to rear oxygen • ECM provides an internal low reference voltage through ECM harness connector EM01 2. Conditions For Setting DTC and The Fault Location: DTC DTC Detection Conditions For Setting The DTC Fault P0137 Short to Ground When 1. Engine Running Longer than 60s. 2. Water temperature is more than 70°C(158 ºF)。 3. Rear Oxygen Sensor Short to Ground 4. Duration Longer Than 25s. P0138 Post-catalytic Oxygen 1. Engine Running Longer than 60s. 2. Water temperature is more than 70°C(158 ºF)。 3. Rear oxygen sensor signal is terminated at the power supply. 4. Duration Longer Than 13s. P0140 1. Oxygen Sensor Signal Circuit 2. Oxygen Sensor With High 1. Engine Running Longer than 60s. 2. Water temperature is more than 70°C(158 ºF)。 3. Rear oxygen sensor signal 1. Sensor Circuit 2. Sensor 3. ECM. 199 |