P064A - DTC P064A - Powertrain Control Module (PCM) Power Input Signal Range/Performance Problem

Quick Answer

P064A means: P064A signifies a power input signal performance issue in the PCM.

Fix: Check and replace faulty components Cost: $800 - $1500 Time: 90-180 minutes

Can I drive with P064A? Address this issue promptly to avoid engine performance problems.

Common Questions

What does P064A mean and how does it affect my car?

The P064A code means there is a problem with the power input signal to your vehicle's PCM. This can affect various engine functions, leading to reduced performance, potential stalling, and other issues that can compromise your vehicle's reliability.

What are the most common causes of P064A and how much does it cost to fix?

Common causes include a faulty PCM, wiring issues, or sensor failures. Repair costs can range from $100 for simple wiring fixes to over $1500 for a full PCM replacement, depending on your vehicle and the severity of the issue.

Can I drive my car with P064A or should I stop immediately?

Driving with a P064A code is not advisable as it can lead to serious engine performance issues. If your vehicle shows symptoms like stalling or difficulty starting, it's best to have it inspected immediately.

How can I diagnose P064A myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for DTCs, view freeze frame data, and monitor real-time sensor outputs. This will give you insights into potential malfunctions related to the power input signal.

What vehicles are most commonly affected by P064A?

Vehicles such as the 2015-2018 Honda Civic and 2016-2019 Ford Fusion often experience the P064A code. Be sure to check for any recalls or technical service bulletins related to your specific make and model.

How can I prevent P064A from happening again?

Regular vehicle maintenance, including checking wiring for wear and tear, ensuring proper battery function, and keeping software up to date, can help prevent the recurrence of the P064A code.

What is P064A?

The diagnostic trouble code (DTC) P064A indicates a problem with the power input signal to the powertrain control module (PCM). This code typically arises when the PCM detects that the voltage level of the power input signal is outside the expected range. In practical terms, this means that the PCM isn't receiving the correct voltage, which can lead to a variety of engine performance issues. When the power input signal is too high or too low, the PCM may fail to properly manage fuel injection, ignition timing, and other critical engine functions. This can result in symptoms like poor engine performance, stalling, or even failure to start. If you own a vehicle such as a 2015-2018 Honda Civic or 2016-2019 Ford Fusion, you may encounter this code, especially if you notice the check engine light activated. Addressing P064A is crucial not just for vehicle performance but also for preventing further damage to the engine and associated components.

System: P - Powertrain (Engine, Transmission, Emissions)

Symptoms

Common symptoms when P064A is present:

Check engine light stays on constantly, indicating a fault in the powertrain control module.
Engine may hesitate during acceleration, leading to a lack of responsiveness when you press the gas pedal.
Fuel economy decreased by 10-15%, which you may notice when filling up more frequently than usual.
Erratic engine behavior, such as stalling or misfiring, especially during idling or low-speed driving.
Difficulty starting the vehicle, which can manifest as long cranking times or a complete failure to start.

Possible Causes

Most common causes of P064A (ordered by frequency):

{'cause': 'Faulty powertrain control module (PCM)', 'likelihood': '40%', 'details': 'A malfunctioning PCM can misinterpret voltage signals, leading to incorrect readings.'}
{'cause': 'Wiring issues or poor connections', 'technicalExplanation': 'Damaged or corroded wiring can interrupt the signal from the power input, causing the PCM to trigger the P064A code.'}
{'cause': 'Failed sensors, such as the throttle position sensor', 'preventionTips': 'Regularly inspect and replace worn sensors to maintain proper signal input to the PCM.'}
{'cause': 'Battery or alternator problems', 'details': 'Weak battery voltage or a failing alternator can affect the power supply to the PCM.'}
{'cause': 'Software glitches or outdated PCM programming', 'details': 'Sometimes, a simple software update from the dealership can rectify signal misinterpretations.'}

P064A Repair Costs

Cost Breakdown by Repair Type

PCM Replacement

Replacing the faulty powertrain control module with a new or refurbished unit.

Total: $800 - $1500
Success rate: 85%

Wiring Repair

Repairing damaged wiring or connections that affect the power input signal.

Total: $100 - $300
Success rate: 90%

Money-Saving Tips for P064A

Start with the most common and least expensive repairs first
Use GeekOBD APP to confirm diagnosis before replacing expensive parts
Consider preventive maintenance to avoid future occurrences
Compare prices for OEM vs aftermarket parts based on your needs
Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional P064A Diagnosis Process

Follow these systematic steps to accurately diagnose P064A. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).