T8 / P0115 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Incorrect temperature gauge reading. Radiator fan runs continuously.

P0115 00

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

Incorrect temperature gauge reading.

Radiator fan runs continuously.

On-board diagnosis

Type of diagnosis:

Once per driving cycle.

Enable criteria:

General conditions for this DTC

•	NONE of the following DTCs should be detected: P0117, P0118.

Test 1

•	Ignition ON.

•	Engine temperature over 71°C.

•	Max 20°C difference between the exhaust temperature and intake air temperature (Which indicates a cold start).

Test 2

•	Engine running.

•	Engine temperature under 71°C.

Fault criteria:

Test 1

•	When the engine temperature is above +71°C.

Test 2

•	When the temperature increase (measured from starting temperature) is below 2°C at various load ranges (150 mg/C, 270 mg/C).

Dependent:

None

System reaction to a fault:

The system continues to function with a calculated engine temperature.

OK report:

Test 1 and Test 2 completed once and fault criteria not fulfilled.

Fault handling:

Type III

(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 the component (displays constant temperature regardless of actual temperature).

Functions in the diagnostic tool related to the fault:

Test value:

•	Engine Temperature

•	Intake Air Temperature

(See also description of readings/activations in diagnostic tool)