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 is having trouble getting a steady signal from the sensor that checks the battery charger's voltage. It's like if your TV remote sometimes works and sometimes doesn't because the battery connection is loose.
The P0D46 code is triggered when the vehicle's control module detects an intermittent or erratic signal from the battery charger 14-volt output voltage sensor circuit.
This code indicates that the voltage sensor circuit, responsible for monitoring the 14-volt output of the battery charger, is sending inconsistent or erratic signals to the powertrain control module (PCM). This could be due to wiring issues, a faulty sensor, or problems within the battery charger itself.
• Check Engine Light is on
• Fluctuating electrical system performance
• Battery not charging properly
• Faulty voltage sensor
• Damaged or corroded wiring/connectors
• Malfunctioning battery charger
Voltage Sensor: A device that measures the voltage of a circuit and sends the data to the vehicle's computer.
PCM: Powertrain Control Module, the computer that controls the engine and transmission functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the voltage sensor and its wiring for damage or corrosion.
• Test the battery charger output voltage with a multimeter.
• Replace the faulty voltage sensor.
• Repair or replace damaged wiring/connectors.
• Replace the battery charger if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections and wiring.
• Ensure battery charger is functioning properly.
• Perform routine maintenance checks on the electrical system.
Sensor Issue
• Avoid using high electrical loads until the issue is fixed.
• Have the vehicle inspected by a professional mechanic.
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code is relatively uncommon and usually associated with hybrid or electric vehicles.
Moderate – It should be addressed soon to prevent battery charging issues.
Driving with this code may lead to battery charging problems, which can affect the vehicle's performance.
• Vehicle must be in 'Ready' mode.
• Ensure battery is not fully charged.
The voltage sensor is typically located near the battery charger or integrated within the battery management system.
Q: Can I drive with the P0D46 code?
A: While you can drive with this code, it's best to have it fixed soon to avoid potential battery charging issues.
Q: How do I know if the voltage sensor is faulty?
A: A faulty voltage sensor may cause erratic readings or fail to provide consistent voltage output data to the vehicle's computer.
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