P1A99
Starter/Generator Control Module Hybrid Battery Current Sensor Circuit Low Current
P1A99 is an OBD-II diagnostic trouble code meaning: Starter/Generator Control Module Hybrid Battery Current Sensor Circuit Low Current. Common causes: hybrid battery current sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced hybrid system efficiency
- Problems with regenerative braking
- The car goes into emergency mode
- Reduced engine power
Causes
- Hybrid battery current sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in wiring connectors
- Starter/Generator Module Malfunction
- Wiring Harness Problems
How to Fix
- Check the continuity of the current sensor circuit
- Inspect connectors and contacts for corrosion
- Check the functionality of the current sensor
- Test starter/generator module
- Replace faulty components
Related codes
FAQ
What does the P1A99 code mean?
P1A99 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Control Module Hybrid Battery Current Sensor Circuit Low Current
What causes a P1A99 error code?
The most common causes of P1A99 include: Hybrid battery current sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in wiring connectors; Starter/Generator Module Malfunction.
How do I fix a P1A99 diagnostic trouble code?
To fix P1A99: Check the continuity of the current sensor circuit. Inspect connectors and contacts for corrosion. Check the functionality of the current sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1A99?
Yes, but get it checked soon
How much does it cost to fix P1A99?
The estimated repair cost for P1A99 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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