P0AE5: Hybrid/EV Battery Precharge Contactor A Control Circuit Range/Performance
What to do
The wake-up ceremony taking noticeably longer than it used to is worth mentioning — it is this family announcing itself early.
What this code means
The precharge contactor's command circuit is behaving implausibly — coil current or precharge timing drifting outside expectation. Worth one specific note: precharge taking longer than it used to is this family's early warning, visible to the module as timing before it fails as a no-start. The ageing-coil and resistive-connection story of P0ADA otherwise.
Likely causes
Start here
- Corroded or loose connector · easy
Less common
- Failed precharge resistor · specialist
- Faulty battery contactor · specialist
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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