Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0AA1-00Hybrid/EV Battery Positive Contactor “A” Stuck Closed
P0AA1-00Hybrid/EV Battery Positive Contactor ""A"" Stuck Closed
P0AA1-00Hybrid/EV Battery Positive Contactor "A" Stuck Closed
Manufacturer communications
74Original wording in English
DODGE
Powertrain Modules Software Update Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more the following Diagnostic Trouble Codes (DTCs): ● P0AA7-00 - Hybrid/EV Battery Pack "A" Voltage Isolation Sensor. ● P1614-00 - ECU Reset/Recovery Occurred. ● B1A8A-00 - M…
JEEP
Not applicable to vehicles built for US market. Engine Will Not Start If Fault Code P0AA1-09 Is Present Customers may experience the following: ● The engine will not start with display of the message "Electric drive system fault" in the Instrument Panel Cluster (IPC) - if fault code P0AA1-09 is present.
MERCEDES-BENZ, MERCEDES-MAYBACH
Complaint 48V battery (A66) part numbers A 000 982 78 24, A 000 982 57 30, A 000 982 88 31, A 000 982 50 32, A 000 982 87 32) may trigger a fault message ("48 V Service Required" with fault codes P0ADA91, P0ADE91, P0AA100, P0ADD00 or P0AA000) in the instrument cluster. This fault message may prevent the 48 V battery contactors f…
DODGE
RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Battery Pack Control Module (BPCM) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more the following Diagnostic Trouble Codes (DTCs): ● P0AA7-00 - Hybrid/EV Battery Pack "A" Volta…
Check vehicle applicability
252A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.