ME9 / P0130 00
Symptom: Malfunction Indicator Lamp
O2S 1 Evaluation Fault/Sensor in Air
Fault symptom
Malfunction Indicator Lamp
On-board diagnosis
Type of diagnosis:
Enable criteria:
| • | Sensor in normal operating range (715°C and up). |
| • | Desired lambda value is less than 1.6. |
| • | Voltage across the Nernst cell is 3.7 - 4.8 V. |
| • | NONE of the following DTCs must be detected: |
| • | Closed loop lambda control active. |
Fault criteria:
| • | The control module detects that no hydrocarbons are passing the sensor because it is not mounted in the exhaust pipe. |
| • | The control module detects a fault on the sensor circuit, but not precisely which fault. |
| • | Run additional operating cycles until another O2S 1 DTC is detected. Then follow fault diagnosis for that DTC. |
Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.
Diagnostic help
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
