E39 / P0138 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE lamp on.
O2S 2 Circuit, High Voltage
Fault symptom
CHECK ENGINE lamp on.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| The following diagnostic trouble codes may not be generated: |
| P0201, P0202, P0203, P0204 |
| P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271 |
| P0442, P0443, P0446, P0449, P0452, P0453, P0455, |
| P1248, P1249, P124A, P124B |
| P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157 |
| Battery voltage must be between 11 - 16 V. |
| Motor running more than 180 s. |
| EVAP, leak diagnosis not active, if OBDII. |
| The ethanol content is lower than 87%. |
Fault criteria:
| When the voltage across the sensor is more than 1050 mV. |
Dependent:
System reaction to a fault:
Fault handling:
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
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
Diagnosis regards:
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
