ME9 / P0102 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp

P0102 00

Fault symptom

Malfunction Indicator Lamp

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Battery voltage must be between 10 - 18 V.

Engine running.

Fault criteria:

When the signal from the mass air flow sensor is below 10.3 g/s for more than 4 seconds.

OK report:

When the signal is between 10.3 and 333 g/s.

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:

•	Mass Air Flow Sensor

•	Air Mass Flow

•	Requested Throttle Position

(See section Fault handling III, "Other emission-related components and functions" for more information.)