E39 / P2123 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine Message appears in display. Limp home

P2123 00

Fault symptom

Check Engine

Message appears in display.

Limp home

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Not in limp-home

The following diagnostic trouble codes may not be generated:

P06A3

Fault criteria:

The voltage at the control module input exceeds 4.75 V for more than 0.6 seconds.

Dependent:

None

System reaction to a fault:

Limp home

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:

Test value:

•	Pedal Position Sensor 1

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