SAAB WIS ONLINE

P0101

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE lamp on. Loss of performance.

P0101


Mass air flow sensor circuit. Performance Problem.

Fault symptoms


• CHECK ENGINE lamp on.

• Loss of performance.


On-Board Diagnostics

Type of diagnosis:


- Continuous


Enable criteria:


- Turn Ignition On.

- Engine not running.

- Engine not overheated.


Fault criteria:


- The signal at 0 rpm is above/below the limit value.


System reaction to a fault:


- In case of error, EGR control is deactivated.


OK report:


- Enable criteria fulfilled without any faults being reported.


Check the wiring

A fault in the control module's female connector can generate a DTC. Check the contact for oxidation, dislodge pins and pin clamping force.

Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this. Check switches, connectors and crimp connections for oxidation, dislodged pins and pin clamping force.

Diagnostic help

Diagnostic tool functions related to this fault are:


• Read value:

• Mass air flow sensor


For more information, see also:

- "Read Values" menu for a description of read values.

- "Activate" menu for a description of applications.