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 the temperature sensor for the battery charger is not working right. It's like a thermometer that isn't showing the right temperature.
The P0D9B code indicates that the voltage signal from the battery charger coupler temperature sensor is lower than expected by the vehicle's powertrain control module (PCM).
The battery charger coupler temperature sensor monitors the temperature at the connection point where the charger plugs into the vehicle. This sensor sends a voltage signal to the PCM. If the signal is too low, it suggests a potential issue with the sensor or its circuit, such as a short to ground or a faulty sensor.
• Check Engine Light is on
• Charging system may not function properly
• Possible overheating of charging components
• Faulty temperature sensor
• Wiring issues such as a short to ground
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the temperature sensor for proper operation
• Replace the faulty temperature sensor
• Repair or replace damaged wiring
• Reprogram or replace the PCM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular inspection of charging components
• Ensure proper connection of charging cables
• Avoid exposure to extreme temperatures
Sensor Issue
• Avoid charging the vehicle until the issue is resolved
• Consult a professional mechanic for diagnosis
Check vehicle warranty for coverage on electrical components
This code has been more commonly reported in hybrid and electric vehicles due to their reliance on battery charging systems.
Moderate – Charging issues can lead to reduced vehicle performance.
Ignoring this issue may lead to further damage to the vehicle's electrical system.
• Vehicle in park with engine off
• Charger connected
The temperature sensor is typically located near the battery charging port or coupler.
Q: Can I drive my car with this code?
A: It's best to avoid driving until the issue is diagnosed and resolved, as it may affect charging efficiency.
Q: How can I reset this code?
A: You can reset the code with an OBD-II scanner, but it's important to fix the underlying issue first.
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