NANO

ENGINE DTC DESCRIPTION CAUSE DIAGNOSTIC LAMP ( MIL ) DIAGNOSTIC LAMP ( CEL ) Gil When Driven In CNG PROBABLE TROUBLE AREA P0130 Upstream Oxygen Sensor Circuit Open/short to ground. Signal Error/short to ground ON OFF ON 1) Loose/ Damaged Connections or Intermittent fault. 2) Sensor supply line Short circuit to Battery/ Ground. 3) Sensor Signal line Short circuit to Battery/ Ground. 4) Check the continuity from sensor connector pins to the ECU pins.( ECU pin 155- Sensor Pin 1; ECU pin 246- Sensor Pin 2; ECU Pin 204- Sensor Pin 3; ECU pin 230- Sensor pin 4.) . 5) Check for back out of pins at both Sensor connector and ECU connector. 6) Check for damage of pins at both sensor connector and ECU connector. 7) Faulty Upstream HO2S1 Sensor. 8) Faulty ECU P0132 Upstream Oxygen Sensor Circuit short to battery Short Circuit to Battery ON OFF ON P0133 Upstream Oxygen sensor slow response Slow response of the sensor voltage ON OFF ON P0134 Upstream Oxygen Sensor Circuit Signal not plausible Signal Out of range ON OFF ON 1) Loose/ Damaged Connections or Intermittent fault. 2) Sensor supply line Short circuit to Battery/ Ground. 3) Sensor Signal line Short circuit to Battery/ Ground. 4) Check the continuity from sensor connector pins to the ECU pins.( ECU pin 155- Sensor Pin 1; ECU pin 246- Sensor Pin 2; ECU Pin 204- Sensor Pin 3; ECU pin 230- Sensor pin 4.) 5) Check for back out of pins at both Sensor connector and ECU connector. 6) Check for damage of pins at both sensor connector and ECU connector. 7) Faulty Upstream HO2S1 Sensor. 8) Faulty ECU P0135 Upstream Oxygen Sensor Heater Control Circuit Open/Short circuit Open /Short circuit ON OFF ON