P0A99
Hybrid/EV Battery Pack Cooling Fan 2 Control Circuit Low
P0A99 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Cooling Fan 2 Control Circuit Low. Common causes: open or short circuit in fan control circuit, fan solenoid relay malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Noise or lack of operation of the battery cooling fan
- Error message on display
- Elevated battery temperature
Causes
- Open or short circuit in fan control circuit
- Fan solenoid relay malfunction
- Wiring Harness Problems
- Malfunction of the hybrid system control unit
- Mechanical failure of the cooling fan
How to Fix
- Check fan circuit fuses
- Diagnose the control circuit for breaks and short circuits
- Check the operation of the fan
- Test control relay
- Check connections and connectors in the circuit
- Repair only from an authorized dealer
Related codes
Error P0A99 by Vehicle Brand
FAQ
What does the P0A99 code mean?
P0A99 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Cooling Fan 2 Control Circuit Low
What causes a P0A99 error code?
The most common causes of P0A99 include: Open or short circuit in fan control circuit; Fan solenoid relay malfunction; Wiring Harness Problems; Malfunction of the hybrid system control unit.
How do I fix a P0A99 diagnostic trouble code?
To fix P0A99: Check fan circuit fuses. Diagnose the control circuit for breaks and short circuits. Check the operation of the fan. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0A99?
Limited driving only, diagnose soon
How much does it cost to fix P0A99?
The estimated repair cost for P0A99 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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