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 one of the car's electric motors is confused and not working properly.
The P1B01 code indicates an issue with the program flow control in the control module for Drive Motor 'B'. This means that the module is not processing instructions correctly.
The Drive Motor 'B' Control Module is responsible for managing the operation of one of the vehicle's electric drive motors. The 'Program Flow Control Invalid' error suggests that there is a problem with the software or logic that controls the sequence of operations within the module, leading to improper motor function.
• Reduced vehicle performance
• Warning light on the dashboard
• Unusual noises from the motor
• Software glitch in the control module
• Faulty control module
• Wiring or connection issues
Control Module: A computer in the vehicle that manages specific functions.
Reflash: Updating the software in a vehicle's control module.
• Check for other related codes
• Inspect wiring and connections to the control module
• Perform a software update or reflash on the control module
• Reflash or update the control module software
• Repair or replace faulty wiring
• Replace the control module if necessary
• OBD-II scanner
• Multimeter
• Diagnostic software
$200 - $800
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular software updates
• Routine inspection of wiring and connections
• Avoiding excessive moisture exposure
Control Module Issue
• Have the vehicle checked by a professional
• Avoid driving at high speeds until the issue is resolved
Check with the vehicle manufacturer for warranty coverage on control module issues.
This code has been reported in vehicles with electric drive systems, often related to software or connectivity issues.
Moderate – It is recommended to address this issue soon to avoid potential driveability problems.
Ignoring this code may lead to reduced vehicle performance and could impact safety.
• Vehicle stationary
• Engine on
The control module for Drive Motor 'B' is typically located near the motor itself, often in the engine compartment or under the vehicle.
Q: Can I drive with a P1B01 code?
A: It's possible, but not recommended as it may affect vehicle performance and safety.
Q: Will a software update fix the P1B01 code?
A: A software update can often resolve the issue if it's caused by a software glitch.
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