Guide To P063C OBD Error Code Solutions

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Willing to know what the P063C trouble code is related with? Then you have arrived at the right place. The fault code P063C is related with the generator voltage sense circuit. If an improper signal with the generator voltage sense circuit would be detected by the powertrain control module, then the P063C fault code would start flashing. It would give an illumination to the check engine light.

The trouble code P063C can be defined as Generator Voltage Sense Circuit Low. The voltage out of the generator is monitored by the powertrain control module.

If the alternator output voltage would be less than the battery feed circuit voltage, then the powertrain control module would set up the P063C fault code. This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model.

What causes this problem with the Generator Voltage Sense Circuit Low?

• There can be some faults in the alternator
• Alternator harness might be opened or shorted
• Poor electrical connection in the alternator circuit
• Defaults in the powertrain control module
• Some flaws in the voltage regulator
• The serpentine belt might be loose or damaged
• Some defects in the serpentine belt tensioner
• Issue of blown fuse or fuse-able link
• Battery not functioning properly

1. Belt Tensioner Pulley - There can be some issues with the Belt Tensioner Pulley due to which you may see P063C code appearing over and over again. Visit us to buy best quality Belt Tensioner Pulley online.
2. Powertrain Control Module - A lot of issues can arise do to defective Powertrain Control Module. Did you just see P063C code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Timing Belt - Faulty Timing Belt can be the reason why P063C code is flashing. Visit us to purchase top notch Timing Belt online.
4. Engine Control Module - It is an important auto part which needs full care. A faulty Engine Control Module can be a reason behind the flashing up of P063C code.
5. Car Battery - OBD Code P063C can appear because of faulty Car Battery.
6. Instrument Voltage Regulator - There can be some issues with the Instrument Voltage Regulator due to which you may see P063C code appearing over and over again. Visit us to buy best quality Instrument Voltage Regulator online.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• Illumination in the battery warning lamp
• The engine will not start
• The engine might start cranking over slower than normal
• Flashing of the check engine light

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• It is very important to replace the defective alternator
• You can always replace the blown fuse or fuse-able link
• Make sure to clean the corrosion from connectors
• Repairing or replacing wiring
• Repair or replace the battery cables or terminals
• Carefully replace the serpentine belt tensioner
• Replacing the serpentine belt
• The flawed battery should be restored
• Replace the malfunctioning PCM

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Here are some steps which you should follow in order to diagnose this fault code:

• Initial step in the troubleshooting process for any malfunction is to research the Technical Service Bulletins for known issues with the specific vehicle.
• In some circumstances this can save a lot of time in the long run by pointing you in the right direction.
• After that the next step is to perform a thorough visual inspection to check the associated wiring for obvious defects such as scraping, rubbing, bare wires, or burn spots.
• Then check the connectors and connections for security, corrosion and damaged pins. This process must include all wiring connectors and connections to the battery, alternator, PCM, and the voltage regulator.
• Some charging system configurations may be more complex including relays, fuse-able links and fuses in some circumstances.
• The visual inspection should also include the condition of the serpentine belt and the belt tensioner.
• The belt should be tight with a sight amount of flexibility and the tensioner must move freely and apply the appropriate amount of pressure on the serpentine belt.
• Based on the vehicle and the charging system configuration a defective or damaged voltage regulator will require an alternator replacement in most circumstances.
• The advanced steps become very vehicle specific and require the appropriate advanced equipment to perform accurately.
• These procedures require a digital multimeter and the specific technical references for the vehicle.
• The ideal tool to use in this situation is a charging system diagnostic device, if available. Voltage requirements will vary based on the specific year and model of the vehicle.
• The voltage of the battery should be appropriately 12 volts and the alternator output must be higher to compensate for electrical draws and charge the battery as well.
• The lack of voltage indicates a faulty alternator, voltage regulator or a wiring issue. If the alternator voltage output is in the appropriate range, this is an indication that the battery requires replacement or a wiring issue exists.
• If there is absence of a power source or ground, continuity testing may be required to check the integrity of the wiring, alternator, voltage regulator and other components.
• Continuity tests should always be performed with the power removed from the circuit and the normal readings for wiring and connections should be 0 ohms of resistance unless otherwise specified by the technical data.
• Resistance or no continuity is an indication of quirky wiring that is open or shorted and it should be repaired or replaced as per the requirement.

Common Mistakes When Diagnosing The P063C Code

• Failure in the alternator failure
• There can be some defects in the powertrain control module
• Some wiring issues