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 there's a problem with a sensor that checks how hot or cold part of the hybrid or electric car's battery is.
The P0C98 code is triggered when the vehicle's powertrain control module (PCM) detects a problem with the temperature sensor that monitors the battery pack's temperature. This could mean the sensor is not working properly or the readings are outside the expected range.
The P0C98 code indicates that the Hybrid/EV Battery Temperature Sensor 'L' is reporting a temperature that is out of the expected range or not performing as expected. This sensor is crucial for monitoring the battery's temperature to ensure it operates within safe limits. If the sensor fails or provides incorrect data, it can affect the battery's performance and longevity.
• Check Engine Light is on
• Reduced fuel efficiency
• Battery overheating or underperformance
• Vehicle may enter limp mode
• Faulty battery temperature sensor
• Wiring issues such as open or short circuits
• Corroded or loose electrical connections
• Faulty PCM or battery management system
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
Limp Mode: A safety feature that limits vehicle performance to prevent damage
• Use an OBD-II scanner to confirm the code.
• Inspect the battery temperature sensor and its wiring for damage.
• Check the electrical connections for corrosion or looseness.
• Test the sensor's resistance and compare it to manufacturer specifications.
• Replace the faulty battery temperature sensor.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools (screwdrivers, wrenches)
$150 - $400
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections.
• Keep the battery cooling system clean and functional.
• Perform scheduled maintenance on hybrid/EV systems.
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Monitor the battery temperature if possible.
• Seek professional diagnosis if unsure.
Check with the vehicle manufacturer as hybrid/EV components may have extended warranties.
This code has been increasingly common as hybrid and EV vehicles become more prevalent, highlighting the importance of battery management systems.
Moderate – Addressing this issue promptly can prevent potential battery damage.
Ignoring this code may lead to battery overheating, which can pose safety risks.
• Vehicle should be in a safe, well-ventilated area.
• Ensure the vehicle is turned off before inspecting components.
The battery temperature sensor is typically located within or near the battery pack of the hybrid or electric vehicle.
Q: Can I drive my car with a P0C98 code?
A: It's best to address the issue soon to avoid potential battery damage, but short trips may be okay if the vehicle is not showing severe symptoms.
Q: How do I reset the P0C98 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.