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 having trouble understanding signals from the hybrid system, which helps the car use both gas and electric power.
The Engine Control Module (ECM) is receiving an invalid signal from the Electronic Throttle Control (ETC) through the Controller Area Network (CAN) bus related to the hybrid flow control.
The P1A5B code indicates that the ECM has detected an invalid signal from the ETC concerning the hybrid flow control. This could mean that the signal is corrupted, missing, or outside the expected range. The CAN bus is a communication network that allows different components of the vehicle to communicate with each other. In this case, the hybrid system's proper operation is compromised due to this communication error.
• Check Engine Light is on
• Reduced fuel efficiency
• Poor throttle response
• Faulty Electronic Throttle Control (ETC)
• Issues with the CAN bus communication
• Faulty Engine Control Module (ECM)
ETC: Electronic Throttle Control
CAN: Controller Area Network
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code
• Inspect the ETC and its connections
• Check the CAN bus wiring and connectors
• Repair or replace the ETC if faulty
• Fix any wiring issues in the CAN bus
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Diagnostic software
$200 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Ford Fusion Hybrid
• Regular maintenance of the hybrid system
• Ensure all software updates are applied
• Check for any recalls related to the hybrid system
Communication Error
• Have the vehicle inspected by a professional
• Avoid driving aggressively until the issue is resolved
Check with the vehicle manufacturer for warranty coverage on hybrid components.
This code has been associated with communication issues in hybrid vehicles, especially as they age and components wear out.
Moderate – While the car may still be drivable, ignoring the issue could lead to decreased performance and efficiency.
Driving with this code may not comply with emissions regulations and could lead to further damage.
• Vehicle at operating temperature
• Hybrid system engaged
The ETC is typically located near the throttle body, and the CAN bus runs throughout the vehicle.
Q: Can I drive with this code?
A: It's possible, but not recommended as it may affect performance and efficiency.
Q: Will this code affect my car's emissions?
A: Yes, it may lead to higher emissions if the hybrid system is not functioning properly.
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