Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks two of the temperature sensors in the hybrid or electric vehicle's battery are not agreeing on the temperature. It's like having two thermometers that are supposed to show the same temperature, but one says it's hot and the other says it's cold.
The vehicle's control module has detected a discrepancy between the readings from two battery temperature sensors, labeled F and G. This could indicate a fault in one of the sensors or an issue with the battery temperature management system.
The P0C86 code is triggered when the Powertrain Control Module (PCM) or Battery Energy Control Module (BECM) detects that the temperature readings from battery temperature sensors F and G are not within a specified range of each other. This discrepancy could be due to a sensor malfunction, wiring issues, or an actual temperature imbalance in the battery pack.
• Check Engine Light illuminated
• Reduced hybrid or EV performance
• Possible overheating warning
• Faulty battery temperature sensor F or G
• Wiring issues or poor connections in the sensor circuit
• Faulty Battery Energy Control Module (BECM)
PCM: Powertrain Control Module
BECM: Battery Energy Control Module
• Check for any related codes and address them first.
• Inspect the wiring and connectors for sensors F and G for damage or corrosion.
• Test the sensors for correct operation and replace if necessary.
• Repair or replace damaged wiring or connectors.
• Replace faulty battery temperature sensor F or G.
• Reprogram or replace the Battery Energy Control Module if needed.
• OBD-II scanner
• Multimeter
• Thermal camera or thermometer
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections and sensors.
• Keep the battery cooling system maintained.
• Avoid extreme temperature exposure for the vehicle.
Sensor Issue
• Avoid driving the vehicle aggressively until the issue is resolved.
• Have the vehicle inspected by a qualified technician as soon as possible.
Battery and related components may be covered under the vehicle's hybrid or EV warranty. Check with the manufacturer for specific details.
This code has become more common with the increased use of hybrid and electric vehicles, as battery management systems have become more complex.
Moderate – It's important to address this issue to prevent potential battery damage or reduced vehicle performance.
Ignoring this code could lead to battery damage or reduced vehicle performance, which may pose safety risks.
• Vehicle at operating temperature
• Battery system under load
The battery temperature sensors are located within the battery pack, which is usually under the vehicle floor or in the trunk area.
Q: Can I drive with the P0C86 code?
A: It's not recommended to drive for extended periods with this code active, as it could lead to battery damage.
Q: How do I reset the P0C86 code?
A: After repairs, the code can be cleared using an OBD-II scanner, but it will return if the underlying issue is not resolved.
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