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 a sensor that checks the temperature of a part in the car thinks it's much colder than it should be.
The DC/DC converter temperature sensor 'D' is reading a temperature that is too low to be plausible, indicating a potential issue with the sensor or circuit.
The P1CF1 code is triggered when the Powertrain Control Module (PCM) detects an implausibly low temperature reading from the DC/DC converter temperature sensor 'D'. This could be due to a malfunctioning sensor, wiring issues, or a problem with the converter itself.
• Check Engine Light is on
• Vehicle may not start or may stall
• Reduced fuel efficiency
• Faulty DC/DC converter temperature sensor
• Wiring issues such as shorts or open circuits
• Faulty DC/DC converter
DC/DC Converter: A device that converts direct current (DC) from one voltage level to another.
PCM: Powertrain Control Module, the computer that controls the engine and transmission.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections to the sensor
• Test the temperature sensor for proper operation
• Replace the DC/DC converter 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 cooling system operation
• Inspect wiring for damage regularly
Sensor Issue
• Have the vehicle inspected by a professional
• Avoid driving long distances until repaired
Check with the vehicle manufacturer for specific warranty coverage related to sensors and electrical components.
This code has been associated with hybrid and electric vehicles where DC/DC converters are common.
Moderate – It should be addressed soon to prevent potential damage to the vehicle's electrical system.
Driving with this code could lead to further electrical issues or vehicle stalling.
• Vehicle in park
• Engine off and cool
The DC/DC converter temperature sensor is typically located near the DC/DC converter, often in the engine bay or under the vehicle.
Q: Can I drive my car with a P1CF1 code?
A: It's not recommended as it may lead to further issues or vehicle stalling.
Q: How do I reset the P1CF1 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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