OBD Code P0622

Generator Field/F Terminal Circuit

What’s mean?

OBD2 Code P0622 Definition:
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% indicates full load, and below 6% indicates no load.

Symptoms

Possible sumptoms of P0622
– Engine Light ON (or Service Engine Soon Warning Light) – No start

Possible Causes

Possible causes of P0622
– Generator circuit short to ground. – Generator circuit short to voltage. – Generator circuit open. – Battery-sense circuit open. – Generator drive mechanism. (belt) – Damaged generator/regulator assembly. – Damaged PCM.

Possible Solutions

– Battery – Alternator