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 something wrong with the sensor that measures the electricity flow in a special part of the car that changes high voltage to low voltage.
The P1C22 code indicates that the sensor responsible for measuring the current in the DC/DC converter circuit is providing readings that are not consistent with expected values.
The DC/DC converter in hybrid or electric vehicles is responsible for converting high voltage from the battery to lower voltage for use by the vehicle's electrical systems. The current sensor monitors this process. If the sensor's readings are implausible, it suggests a potential fault in the sensor circuit or related components.
• Check engine light on
• Reduced fuel efficiency
• Possible electrical system malfunctions
• Faulty current sensor
• Wiring issues in the sensor circuit
• Malfunctioning DC/DC converter
DC/DC Converter: A device that converts direct current (DC) from one voltage level to another.
Current Sensor: A device that detects and measures the flow of electrical current.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the current sensor.
• Test the current sensor for proper operation.
• Replace the faulty current sensor.
• Repair or replace damaged wiring.
• Replace the DC/DC converter if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Ensure proper electrical connections
• Avoid overloading electrical systems
Sensor Issue
• Avoid driving long distances until repaired.
• Consult a professional mechanic for diagnosis.
Check with your vehicle manufacturer for warranty coverage on hybrid system components.
This code is relatively common in hybrid and electric vehicles as they rely heavily on DC/DC converters.
Moderate – While the vehicle may still operate, it is advisable to address this issue promptly to avoid further complications.
Driving with a malfunctioning electrical system can lead to safety risks. It is recommended to address the issue as soon as possible.
• Vehicle ignition in the 'on' position
• Ensure the vehicle is parked and secure
The current sensor is typically located near the DC/DC converter, often in the engine compartment.
Q: Can I drive with this code?
A: It's possible to drive short distances, but it's best to get it checked soon to avoid further issues.
Q: Will this affect my fuel efficiency?
A: Yes, it can potentially reduce fuel efficiency due to improper electrical system functioning.
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