E39 / P1400 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine

P1400 00

Fault symptom

Check Engine

On-board diagnosis

Type of diagnosis:

Once per driving cycle.

Enable criteria:

General conditions for this DTC

Catalytic converter temperature below 300°C.

Engine At Idle Speed

Coolant temperature over 17 °C.

Vehicle speed below 2.5 km/h.

Accelerator pedal released.

Cold start detected.

Fault criteria:

The actual exhaust energy model does not correspond with the expected exhaust energy model.

Fault handling:

Type III

Diagnostic help

Diagnosis regards:

Diagnostics concerns finding a mechanical or electrical fault.

Functions in the diagnostic tool related to the fault:

Read value

Engine Speed (RPM)

Ignition Angle

Throttle Position

Mass air flow

Coolant Temperature

Car Speed

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