what does this code mean po622 generator field [f] control circuit

Asked by Mar 25, 2013 at 09:48 AM about the 2008 Toyota Hilux

Question type: Maintenance & Repair

i started my hilux and the engine light was on so i took to my mates garage pluged it in and it came back
with p0622 generator field [f] control circuit and would like to no what it means thank you

5 Answers

What does this mean? OBD Code P0622refers to 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 OBD code P0622 - Engine Light ON (or Service Engine Soon Warning Light) - No start Causes Possible causes of OBD code 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.

7 of 7 people found this helpful.

PCM is Power Train Control Module, and what stands out here is belt.

1 of 1 people found this helpful.
100,735

Does the alternator work? Is the battery charging? -- The ECU sends a 5 volt signal to the alternator to excite the alternator field. That's starts the power generation. -- The P0622 code means that there is a problem with that signal. The alternator may still work because nothing is perfect and the alternator might have some residual magnetism to get the power generation ball rolling.

5 of 5 people found this helpful.

ok I have same code but my car wont move

7 of 7 people found this helpful.
20

Would like to know direction of next step of obtaining cue. Replace alt twice battery light won't go out. But charging fine . how do I test thenpcm n ecm?

2 of 2 people found this helpful.

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