E39 / P0116 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Malfunction Indicator Lamp
Engine Coolant System, Malfunction
Fault symptom
Malfunction Indicator Lamp
On-board diagnosis
Type of diagnosis:
Enable criteria:
| NONE of the following DTCs must be detected: |
| • | P0111, P0112, P0113, P0114 |
| The ignition has been OFF for more than 8 hours. |
| The vehicle should have been driven more than 10 minutes during the previous driving cycle. |
| Engine temperature upon start is lower than 50 °C. |
| The vehicle should have been driven more than 10 minutes during the previous driving cycle. |
Fault criteria:
| Coolant temperature is more than 10°C higher or lower than calculated. |
OK report:
| No fault detected after 10 minutes of driving. |
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:
| Fault in the cooling system (coolant level/thermostat). |
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
