P0AE1 on Acura
Hybrid Battery Precharge Contactor Circuit
P0AE1 on Acura vehicles indicates hybrid battery precharge contactor circuit. Au7o has documented this code across 1 Acura model — most commonly on ILX. A general fault in the hybrid battery precharge contactor circuit. The precharge contactor (with a resistor) limits inrush current to the inverter capacitors before the main contactors close. Typical repair costs on Acura range from $2,000 to $4,000, depending on the specific model and root cause.
Common Causes of P0AE1
- •Failed precharge contactor or resistor
- •Open/shorted precharge circuit
- •Connector fault
- •BMS/control fault
P0AE1 on Acura by Model
Acura ILX(1 issue)
- IMA Hybrid Battery Module Degradation and Failure (2013-2014 ILX Hybrid, 1.5L)2013-2014
The ILX Hybrid used the Civic Hybrid's Integrated Motor Assist system - a 1.5L engine with a thin motor-generator between engine and CVT and a nickel-metal-hydride IMA battery pack. It sold in tiny numbers for only two model years and was dropped after 2014. The IMA pack degrades: individual cell sticks fall out of balance, capacity drops, the state-of-charge display swings wildly from full to empty, assist and regen are cut, and the IMA warning light and check engine light illuminate. Acura acknowledged the pattern with Service Bulletin 12-012 (revised June 2015) establishing an IMA Battery Exchange Program covering ILX (and RLX Sport Hybrid) IMA batteries for any internal failure requiring module disassembly - explicitly including out-of-warranty vehicles. Owners also report a second, separate problem: repeated 12V accessory battery failures and no-crank conditions, which on an IMA car is often a symptom of the hybrid system not charging the 12V properly rather than a bad 12V battery.
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View P0AE1 across all makes →Frequently Asked Questions
What does P0AE1 mean on Acura?▼
P0AE1 stands for "Hybrid Battery Precharge Contactor Circuit." A general fault in the hybrid battery precharge contactor circuit. The precharge contactor (with a resistor) limits inrush current to the inverter capacitors before the main contactors close. On Acura specifically, this code is documented across 1 model.
What causes P0AE1 on Acura vehicles?▼
Common causes on Acura: Failed precharge contactor or resistor, Open/shorted precharge circuit, Connector fault, BMS/control fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0AE1 on a Acura?▼
Repair costs on Acura range from $2,000 to $4,000, depending on the specific model and root cause.
Which Acura models have P0AE1 documented?▼
Au7o has documented P0AE1 on 1 Acura model: ILX.