garajizOBD-II code · manufacturer-specific
P1AA2
Voltage holding device (stop-start capacitor) fault
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Minor (2/5)
- Can I keep driving?
- Usually safe to drive
What does P1AA2 mean?
P1AA2 is defined as “Voltage holding device (stop-start capacitor) fault”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Citroën, Peugeot, DS: Voltage holding device (stop-start capacitor) fault
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This page is general information; an exact diagnosis needs measurements and a technician’s check.