P0102

P0102 00

Mass Air Flow Circuit. Low Input.







Fault symptom
CHECK ENGINE
Cruise control not working.
Limp home

On-board diagnosis

Type of diagnosis:
Continuous

Enable criteria:
Battery voltage must be between 11 - 16 V.
Ignition ON.

Fault criteria:
When frequency is lower than 1500 Hz (1.2 g/s) for more than 1.0 s.

Dependent:
None

System reaction to a fault:
The system is pressure controlled.
Boost pressure adaption is blocked and reset.
Limited acceleration and idle function.
Cruise control blocked.
Secondary air switched off.

OK report:
Fault criteria NOT fulfilled for 2 s.

Fault handling:
Type III
(See Description of On-Board Diagnostics/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