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 not getting the right information about the battery's voltage. It's like if your flashlight's batteries were running low and it couldn't shine as bright.
The P063C code indicates that the vehicle's powertrain control module (PCM) has detected a low voltage condition in the generator voltage sense circuit.
The generator voltage sense circuit is responsible for monitoring the voltage output from the alternator to ensure it is within the specified range. If the PCM detects that the voltage is lower than expected, it triggers the P063C code. This could be due to issues with the wiring, connectors, or the alternator itself.
• Check Engine Light is on
• Battery warning light may be illuminated
• Vehicle may have difficulty starting
• Faulty alternator
• Damaged wiring or connectors in the voltage sense circuit
• Faulty PCM
PCM: Powertrain Control Module
Alternator: A component that generates electrical power to charge the battery and power the vehicle's electrical systems.
• Use an OBD-II scanner to confirm the code.
• Inspect the alternator and voltage sense circuit for damage.
• Check wiring and connectors for corrosion or damage.
• Replace or repair damaged wiring or connectors.
• Replace the alternator if it is faulty.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain battery and alternator connections.
• Ensure the alternator is functioning properly.
• Have the electrical system inspected periodically.
Sensor Issue
• Have your vehicle inspected by a professional if you notice electrical issues.
• Avoid driving with a known electrical fault to prevent further damage.
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code has been known to appear in vehicles with aging electrical systems or after battery replacements.
Moderate – It is important to address this issue to prevent potential battery drain or electrical failures.
Driving with electrical issues can lead to vehicle breakdowns. Ensure repairs are performed by a qualified technician.
• Vehicle engine running
• All electrical systems on
The alternator is typically located at the front of the engine, driven by the serpentine belt.
Q: Can I drive with the P063C code?
A: It's not recommended to drive for extended periods with this code as it can lead to battery drain.
Q: Will a dead battery cause the P063C code?
A: A dead battery can contribute to this code, but the underlying issue is usually with the alternator or wiring.
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