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P0AC2 Moderate Generic / SAE

P0AC2: Hybrid/EV Battery Pack Current Sensor A Circuit High

Powertrain Hybrid Propulsion Emissions related
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What to do

Abrupt hybrid caution with this code is protection against a false reading more often than a real event.

What this code means

The pack current sensor's circuit reads at the top of its range — resembling a massive charge or discharge the pack is not having, which can trigger conservative protection. The mirror of P0AC1; wiring first.

Likely causes

Start here

Symptoms

Components involved

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

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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