Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor that checks the voltage in a part of the car that changes electricity from one form to another. It's like a battery charger not working right.
The P0E37 code indicates an issue with the voltage sensor in the DC/DC converter, which is responsible for converting high voltage to a lower voltage for the vehicle's electrical systems.
The DC/DC converter is a critical component in hybrid and electric vehicles, as it converts high-voltage DC power from the battery pack to low-voltage DC power for the vehicle's 12V system. The voltage sensor B monitors the output voltage of this converter. If the sensor's readings are outside the expected range or performance, the P0E37 code is triggered.
• Check Engine Light illuminated
• Electrical systems not functioning properly
• Battery not charging correctly
• Faulty DC/DC converter voltage sensor
• Wiring issues or poor connections
• Malfunctioning DC/DC converter
DC/DC Converter: A device that converts direct current (DC) from one voltage level to another.
Voltage Sensor: A component that measures the voltage level in an electrical circuit.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the DC/DC converter.
• Test the voltage sensor for proper operation.
• Replace the faulty voltage sensor.
• Repair or replace damaged wiring.
• Replace the DC/DC converter if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Ensure proper electrical connections
• Avoid overloading the electrical system
Sensor Issue
• Avoid driving long distances until fixed.
• Regularly check the battery charge level.
• Consult a professional mechanic for diagnosis.
Check vehicle warranty for coverage on electrical components.
This code has been more common in hybrid and electric vehicles due to their reliance on DC/DC converters.
Moderate – It should be addressed soon to avoid further electrical issues.
Driving with electrical issues can lead to safety hazards. Address promptly.
• Vehicle in 'ON' mode
• Battery at sufficient charge level
The DC/DC converter is typically located near the vehicle's battery pack or under the hood.
Q: Can I drive my car with a P0E37 code?
A: It's not recommended as it can lead to further electrical issues.
Q: How do I reset the P0E37 code?
A: Fix the underlying issue, then use an OBD-II scanner to clear the code.
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