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 a part that changes electricity is reading too low, like if a thermometer said it was freezing when it's actually warm.
The P1CE2 code is triggered when the temperature reading from the DC/DC converter's temperature sensor 'A' is detected as being implausibly low by the vehicle's control module.
The DC/DC converter is responsible for converting high voltage to low voltage in hybrid and electric vehicles. Sensor 'A' monitors the temperature of the converter to ensure it operates within safe limits. An implausibly low reading might indicate a faulty sensor or a wiring issue.
• Check Engine Light is on
• Possible reduced performance
• Electrical system malfunctions
• Faulty temperature sensor
• Wiring issues or poor connections
• Faulty DC/DC converter
DC/DC Converter: A device that converts direct current (DC) from one voltage level to another.
Temperature Sensor: A device that measures temperature and sends the data to the vehicle's computer.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the temperature sensor.
• Test the temperature sensor for proper function.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring.
• Replace the DC/DC converter if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Ensure proper electrical connections
• Monitor vehicle performance
Sensor Issue
• Do not ignore the Check Engine Light.
• Have a professional diagnose the issue.
• Avoid driving the vehicle if performance is affected.
Check your vehicle's warranty; components like sensors may be covered under emissions or powertrain warranties.
This code is more common in hybrid and electric vehicles due to their reliance on DC/DC converters.
Moderate – Addressing this issue promptly can prevent further electrical problems.
Driving with a faulty temperature sensor can lead to safety issues if the vehicle's electrical system fails.
• Vehicle at operating temperature
• Ensure all electrical systems are active
The DC/DC converter and its temperature sensor are typically located near the vehicle's battery pack or under the hood.
Q: Can I drive with a P1CE2 code?
A: It's not recommended as it may lead to further electrical issues.
Q: How do I reset the P1CE2 code?
A: After repairs, use an OBD-II scanner to clear the code.
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