B2247
EV Battery Pack Temperature Fault
B2247 is an OBD-II diagnostic trouble code meaning: EV Battery Pack Temperature Fault. Common causes: battery temperature sensor malfunction, broken or damaged sensor circuit wire. Estimated repair cost: $167–500.
Symptoms
- The malfunction indicator on the dashboard lights up
- Reduced available engine power
- Limiting the maximum battery charging speed
- Inability to start or limited power when accelerating
- Extended battery charging time
- Error message on the information system screen
- Uneven distribution of coolant in the battery
Causes
- Battery temperature sensor malfunction
- Broken or damaged sensor circuit wire
- Corrosion of the sensor connector or its contacts
- Loose or missing contact connection
- Malfunction of the electronic battery management module (BMS)
- Short circuit in wiring harness
- Damage to wire insulation from moisture and road reagents
How to Fix
- Connect a diagnostic scanner and clear additional error codes to clarify the problem
- Visually inspect the battery temperature sensor wiring harness for damage, kinks, and corrosion.
- Check the sensor connector for oxidation and poor contact, clean and reconnect if necessary
- Measure the resistance of the sensor circuit wire with a multimeter to detect an open or short circuit.
- Check the supply voltage at the temperature sensor
- If necessary, replace the battery temperature sensor with an original or certified analogue
- Update the battery management module (BMS) software to the latest version
- Carry out a full cycle of clearing error memory and testing the system
Related codes
FAQ
What does the B2247 code mean?
B2247 is an OBD-II diagnostic trouble code that indicates: EV Battery Pack Temperature Fault
What causes a B2247 error code?
The most common causes of B2247 include: Battery temperature sensor malfunction; Broken or damaged sensor circuit wire; Corrosion of the sensor connector or its contacts; Loose or missing contact connection.
How do I fix a B2247 diagnostic trouble code?
To fix B2247: Connect a diagnostic scanner and clear additional error codes to clarify the problem. Visually inspect the battery temperature sensor wiring harness for damage, kinks, and corrosion.. Check the sensor connector for oxidation and poor contact, clean and reconnect if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2247?
Limited driving only, diagnose soon
How much does it cost to fix B2247?
The estimated repair cost for B2247 is $167–500. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat