T8 / P0641 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Limp home

P0641 00

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

Limp home

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Fault criteria:

When the 5-volt output to the following components short circuits to ground or B+:

•	Pressure sensor, A/C

•	Fuel pressure sensor

•	Pedal Position Sensor 2

•	Throttle Position Sensor 1

•	Boost Pressure Sensor

Dependent:

None

System reaction to a fault:

Limp home

OK report:

Fault criterion not fulfilled and vehicle speed over 0 km/h for more than 60 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:

Read values for the above components.

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