Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that the pump that cools the motor's electronics is getting too hot.
This code indicates that the temperature of the motor electronics coolant pump has exceeded a predefined threshold, which could lead to overheating and potential damage.
The P1A81 code is triggered when the motor electronics coolant pump 'A' exceeds its second temperature threshold. This means that the pump is operating at a temperature higher than what is considered safe, which can affect the cooling of electronic components in the vehicle.
• Check engine light on
• Overheating warning light
• Reduced engine performance
• Faulty coolant pump
• Blocked coolant passages
• Low coolant level
Coolant: A fluid used to keep the engine and electronics from overheating.
Pump: A device that moves fluids through the system.
• Check the coolant level and top up if necessary.
• Inspect the coolant pump for proper operation.
• Check for blockages in the coolant passages.
• Replace the faulty coolant pump.
• Clear any blockages in the coolant system.
• Refill and bleed the coolant system.
• Coolant system pressure tester
• Wrench set
• Diagnostic scan tool
$150 - $500
Moderate
• Chevrolet Volt
• Toyota Prius
• Ford Fusion Hybrid
• Regularly check coolant levels.
• Ensure coolant system is flushed periodically.
• Inspect coolant pump during routine maintenance.
Cooling System Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional if overheating occurs.
Check with your vehicle manufacturer for warranty coverage on cooling system components.
This code has been associated with hybrid and electric vehicles where cooling of electronics is crucial.
High – Overheating can lead to serious engine damage if not addressed promptly.
Driving with an overheating engine can be dangerous and may cause further damage to your vehicle.
• Engine at operating temperature
• Coolant system fully pressurized
The motor electronics coolant pump is typically located near the engine or battery compartment.
Q: Can I drive my car with this code?
A: It's not recommended to drive your car as it may lead to overheating and damage.
Q: How often should I check my coolant level?
A: Check your coolant level at least every few months or during regular service intervals.
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