P1A39
Hybrid/EV Battery Temperature Sensor System Multiple Sensor Correlation
P1A39 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Temperature Sensor System Multiple Sensor Correlation. Common causes: malfunction of one or more battery temperature sensors, problems with wiring to temperature sensors. Estimated repair cost: $56–167.
Symptoms
- Reduced vehicle power
- Switching to emergency mode
- Warning messages on the instrument panel
- Unstable operation of the hybrid system
- Battery charging problems
Causes
- Malfunction of one or more battery temperature sensors
- Problems with wiring to temperature sensors
- Battery management module (BMS) malfunction
- Mechanical damage to the battery module
- Corrosion of contacts in the sensor system
How to Fix
- Carry out diagnostics of all battery temperature sensors
- Check the integrity of wiring and contacts
- Replace faulty temperature sensors
- Test the Battery Management Module (BMS)
- Repair only from an authorized dealer
Related codes
FAQ
What does the P1A39 code mean?
P1A39 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Temperature Sensor System Multiple Sensor Correlation
What causes a P1A39 error code?
The most common causes of P1A39 include: Malfunction of one or more battery temperature sensors; Problems with wiring to temperature sensors; Battery management module (BMS) malfunction; Mechanical damage to the battery module.
How do I fix a P1A39 diagnostic trouble code?
To fix P1A39: Carry out diagnostics of all battery temperature sensors. Check the integrity of wiring and contacts. Replace faulty temperature sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1A39?
Do not drive — repair immediately
How much does it cost to fix P1A39?
The estimated repair cost for P1A39 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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