ME9 / P0111 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp

P0111 00

Fault symptom

Malfunction Indicator Lamp

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

General conditions for this DTC

•	Battery voltage must be between 10 - 18 V.

NONE of the following DTCs must be detected:

•	P0112, P0113, P0117, P0118, U0122

Test 1

•	Engine speed more than 25 rpm for more than 5 seconds.

•	Air mass 28 - 138 g/s.

•	Vehicle speed over 40 km/h

Test 2

•	Coolant temperature upon start between -30°C and 140°C.

•	Coolant temperature above -30°C the last time the engine was switched off.

Test 3

•	Drive with a partial load (air mass 28 - 138 g/s) at over 45 km/h on 3 occasions and at idle speed on 3 occasions.

Fault criteria:

Test 1

•	When the signal on the control module input corresponds to a temperature greater than 100°C for more than 5 seconds.

Test 2

•	Too great a difference between intake air temperature and coolant temperature.

Test 3

Temperature has not changed more than 2.3°C.

OK report:

Tests 1, 2 and 3.

•	Fault criteria above 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 connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:

•	Intake air temperature sensor

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