Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the electric pump that helps move the transmission fluid in your car. It's getting too much electricity.
The P1A6A code indicates that the electric or auxiliary transmission fluid pump motor is receiving a higher voltage than expected.
The P1A6A code is set when the powertrain control module (PCM) detects that the voltage in the circuit of the electric or auxiliary transmission fluid pump motor is higher than the specified range. This could be due to a fault in the wiring, connectors, or the pump motor itself.
• Check Engine Light is on
• Transmission may not shift properly
• Unusual noises from the transmission
• Reduced fuel efficiency
• Faulty electric/auxiliary transmission fluid pump motor
• Short circuit in the wiring
• Faulty PCM or TCM
• Poor electrical connections
PCM: Powertrain Control Module
TCM: Transmission Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the voltage at the transmission fluid pump motor.
• Check the operation of the transmission fluid pump motor.
• Repair or replace damaged wiring or connectors.
• Replace the electric/auxiliary transmission fluid pump motor if faulty.
• Reprogram or replace the PCM/TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Chevrolet Volt
• Toyota Prius
• Ford Fusion Hybrid
• Regular maintenance of the transmission system
• Periodic inspection of electrical connections
• Timely replacement of faulty components
Electrical Circuit Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult with a professional mechanic for a thorough diagnosis.
Check your vehicle's warranty. Some powertrain components may be covered under extended warranty.
This code has been associated with hybrid and electric vehicles where electric pumps are used for transmission fluid circulation.
High – This issue can lead to transmission failure if not addressed promptly.
Driving with a faulty transmission can be dangerous and may result in legal consequences if it leads to an accident.
• Engine running
• Transmission in neutral or park
The electric/auxiliary transmission fluid pump is typically located near the transmission, often mounted on or near the transmission housing.
Q: Can I drive my car with a P1A6A code?
A: It's not recommended to drive with this code as it can lead to further transmission damage.
Q: Will resetting the code fix the problem?
A: Resetting the code may clear the light temporarily, but it won't fix the underlying issue.
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