BMW P1246

OBD Codes

P1246

Description of the defect

Generator Load Input Failed
The PCM monitors generator load from the generator/regulator in the form of frequency. The frequency range is determined by the temperature of the voltage regulator where 97% represents full load, below 6% means no load.

Possible causes

List of elements that might trigger the appearance of this code

Generator circuit short to GND
Generator circuit short to PWR
Generator circuit open
Generator drive mechanism
Damaged generator/regulator assembly
Damaged PCM

Diagnostic help

Some tricks to help us for the diagnosis of the failure

Verify battery voltage is 14.5V.

Verify generator/regulator has the correct part number.

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Created by CAP Informatique Reims