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ME9 / P0111 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp

  P0111 00


Intake Air Temperature Sensor, Performance Problem

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)