P0AC0 on Ford
Hybrid Battery Pack Current Sensor "A" Circuit Range/Performance
P0AC0 on Ford vehicles indicates hybrid battery pack current sensor "a" circuit range/performance. Au7o has documented this code across 1 Ford model — most commonly on Focus. Hybrid battery pack current sensor 'A' signal is implausible or out of expected range relative to operating conditions. Typical repair costs on Ford range from $600 to $3,000, depending on the specific model and root cause.
Common Causes of P0AC0
- •Drifting/failing current sensor
- •High-resistance connection
- •Wiring fault
- •BMS fault
P0AC0 on Ford by Model
Ford Focus(1 issue)
- Focus Electric High-Voltage Battery Contactor Failure - Vehicle Will Not Charge2012-2018
On the battery-electric Focus, the high-voltage pack's main positive and negative contactors (relays) fail - either welding stuck closed or burning their contacts open. When a contactor faults, the on-board charger cannot close the HV circuit, so the car reports a charging fault, refuses to accept AC from either the 120V convenience cord or a 240V EVSE, and may throw HV isolation faults. Owners on the Focus Electric community have traced dead-charge conditions to burnt contactors in the upper pack, sometimes alongside coolant intrusion into the pack, and Ford also issued service information for HV packs that will not charge on the second-generation 120V charge cord.
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View P0AC0 across all makes →Frequently Asked Questions
What does P0AC0 mean on Ford?▼
P0AC0 stands for "Hybrid Battery Pack Current Sensor "A" Circuit Range/Performance." Hybrid battery pack current sensor 'A' signal is implausible or out of expected range relative to operating conditions. On Ford specifically, this code is documented across 1 model.
What causes P0AC0 on Ford vehicles?▼
Common causes on Ford: Drifting/failing current sensor, High-resistance connection, Wiring fault, BMS fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0AC0 on a Ford?▼
Repair costs on Ford range from $600 to $3,000, depending on the specific model and root cause.
Which Ford models have P0AC0 documented?▼
Au7o has documented P0AC0 on 1 Ford model: Focus.