ME9 / P2138 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp Limp home

P2138 00

Fault symptom

Malfunction Indicator Lamp

Limp home

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Battery voltage must be between 10 - 18 V.

Engine running.

NONE of the following DTCs must be detected:

P2122, P2123

P2127, P2128

Fault criteria:

When the difference in voltage between pedal position sensor 1 and 2 is 0.27 - 1.17 V, depending on pedal position (unactuated/fully depressed pedal).

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:

•	Pedal Position Sensor 1

•	Pedal Position Sensor 2

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