ME9 / P0638 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp

P0638 00

Fault symptom

Malfunction Indicator Lamp

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Engine running.

Battery voltage must be between 10 - 18 V.

Fault criteria:

Current throttle position deviates from the requested position for more than 1 s.

Diagnostic help

Diagnosis regards:

Electrical fault in connecting leads or component.

Mechanically binding/affected throttle.

Functions in the diagnostic tool related to the fault:

Test value:

•	Throttle Position Sensor 1

•	Throttle Position Sensor 2

Activation:

•	Throttle Position

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