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 computer in charge of controlling the electric motor in your car is confused. It's like when you're trying to follow a recipe, but the instructions don't make sense.
The vehicle's control module for the drive motor has detected an error in the program flow control, which means the software is not executing commands as expected.
P1AFB indicates a fault in the drive motor control module's program flow control. This can occur when the control module's software logic encounters an unexpected condition or error that disrupts its normal operation. This error can affect the performance of the electric drive motor, potentially leading to reduced efficiency or drivability issues.
• Check Engine Light is on
• Reduced vehicle performance
• Unexpected behavior in electric motor operation
• Software glitch in the control module
• Faulty drive motor control module
• Corrupted or outdated software in the control module
Control Module: A computer that manages various functions of the vehicle.
Program Flow Control: The sequence in which a computer program executes its instructions.
• Use an OBD-II scanner to read the code and confirm P1AFB.
• Check for any software updates for the drive motor control module.
• Inspect the wiring and connections to the control module for any damage or corrosion.
• Update the control module software to the latest version.
• Replace the drive motor control module if it is faulty.
• Repair or replace any damaged wiring or connections.
• OBD-II scanner
• Multimeter
• Diagnostic software for module updates
$200 - $800
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regularly update vehicle software as recommended by the manufacturer.
• Perform routine maintenance checks on electrical systems.
• Avoid harsh driving conditions that could stress the electric motor.
Control Module Programming Issue
• Visit a certified mechanic or dealership for diagnosis and repair.
• Do not ignore the Check Engine Light; address the issue promptly.
Check with your vehicle manufacturer for warranty coverage on control module issues.
This code is more common in hybrid and electric vehicles due to their reliance on complex control modules.
Moderate – While the vehicle may still operate, ignoring this issue can lead to reduced performance and efficiency.
Operating a vehicle with a control module issue may violate emissions standards and could lead to safety concerns.
• Vehicle at operating temperature
• Electric motor engaged
The drive motor control module is typically located near the electric motor or integrated within the powertrain control module.
Q: Can I drive my car with a P1AFB code?
A: While you may be able to drive, it's not recommended as it could lead to further issues or reduced performance.
Q: How can I prevent this code from appearing?
A: Regular maintenance and software updates can help prevent this code from appearing.
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