What this code means
P065A can indicate a charging malfunction reported by the alternator's self-diagnosis.
P065A concerns a charging malfunction reported through the alternator's self-diagnosis. The stored code identifies the malfunction being investigated; the drive belt inspection and alternator inspection provide the named work items that follow.
The code and those inspection findings have different roles. The charging-system indication starts the investigation. The later conclusion about the alternator depends on the other completed inspection items being normal.
What the vehicle may do
- The alternator may report a malfunction through self-diagnosis.
- The PCM can then recognize that malfunction and store P065A.
Possible fault areas
- The drive belt may be an area to check.
- The alternator may be an area to check.
Address the prerequisite charging-system code when it is indicated. The drive belt inspection and alternator inspection are the named work items in this procedure. The confirmation then uses the stated engine-idle period and the listed HDS data view.
The alternator conclusion depends on the other completed inspection items being normal. This connects the drive-belt finding and the other inspection results to the remaining-alternator decision, rather than treating the stored charging code as that final result.
Diagnostic path
Understand the stored condition
P065A is named ACG No Charging Malfunction. This can mean the alternator’s own self-diagnosis has reported a charging malfunction.
Address the prerequisite first
If Charging System [PGM-FI]: DTC P0562 is listed or indicated, it takes priority. Troubleshoot it first, before continuing with the remaining P065A checks.
Drive belt check
Complete Drive Belt Inspection using the correct applicable procedure.
Alternator check
Use the Alternator Inspection work item. Complete that inspection using the correct applicable procedure.
Confirmation Procedure
Start the engine for the Confirmation Procedure. Let it idle for 1 minute.
The confirmation setup calls for the engine to idle for the stated period. The HDS function listed alongside it is PGM-FI > Data List. These are the two supplied parts of this stage: the engine operating setup and the menu location. Keep them connected to the preceding inspections when following the sequence.
Listed HDS function
The listed HDS function is PGM-FI ＞ Data List.
Conditional alternator result
The Alternator Inspection Test Procedure depends on what the other inspection items show. If those completed inspections show a normal condition, the remaining alternator is identified as the cause. That result means there is a problem with the alternator.
Final check
The alternator may be identified as the cause when the other completed inspection items show a normal condition.
The completed sequence should show the initial charging-code condition, the checks performed and their individual results. Follow the specific branch stated for each result, keeping any final remaining-component conclusion tied to its prerequisites.
