P0AFA on Honda: How to Diagnose & Fix
14V Power Module System Voltage
1 Honda model · 1 documented issue · 1 critical
P0AFA on Honda by model: symptoms, diagnosis and fix
A small number of early-build 2023 CR-V Hybrid vehicles (assembled Oct 6, 2022 - Jan 24, 2023) have high-voltage traction battery modules supplied by Panasonic with insufficient copper cladding thickness on negative terminals. The terminal or busbar inside the pack can fracture and spark, increasing the risk of injury or fire, and can cause a sudden loss of drive power. Honda issued NHTSA recall 24V745000 covering 98 vehicles. Although the population is small, the failure mode (HV battery spark/fire plus loss of propulsion) is high severity.
Common Symptoms
- Sudden loss of drive power
- Reduced propulsion warning
- Hybrid system / propulsion warning lights
- Spark or fire risk from battery pack
How to Fix
Under recall 24V745000, dealers replace the affected high-voltage battery module free of charge. Owner letters were mailed November 27, 2024. Affected owners should verify recall status by VIN at nhtsa.gov/recalls and contact Honda Customer Service (1-888-234-2138).
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Sources for this issue (2)
P0AFA code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0AFA mean on a Honda?
P0AFA stands for "14V Power Module System Voltage." P0AFA is a hybrid/electric vehicle code indicating the computer detected low voltage in the 14-volt power module system — the converter that supplies the conventional 12V/14V electrical system in a hybrid or EV (the equivalent of a traditional alternator). The 14V power module (often a DC-DC converter) steps down the high-voltage battery to power lights, accessories, and the auxiliary 12V battery. When the monitored output voltage falls below the expected threshold, this code is set. It generally indicates the low-voltage electrical system isn't being properly charged, which can lead to a dead 12V battery and a no-start condition. On Honda it is documented across 1 model: CR-V.
What are the most common causes of P0AFA?
The most common causes of P0AFA are: Failing DC-DC converter / 14V power module, Weak or failing auxiliary 12V battery, Corroded or loose 12V battery terminals and ground connections, Damaged wiring or connectors in the low-voltage charging circuit, Excessive electrical load draining the system, Fault in the high-voltage battery supply to the converter, Internal control module or software fault. The specific cause varies by vehicle.
How much does it cost to fix P0AFA on a Honda?
Repair costs vary widely with the root cause and Honda model; each issue on this page carries its own estimate where one is published.
Looking for P0AFA on a different make?
View P0AFA across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.