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 pump that helps keep the electronics in a hybrid or electric car cool. It's like a fan that isn't working properly to cool down your computer.
The P2E42 code indicates that the performance of the coolant pump responsible for cooling the hybrid or electric vehicle's electronics is not within the expected range.
The Hybrid/EV Electronics Coolant Pump B is responsible for circulating coolant to maintain optimal temperatures for electronic components in hybrid and electric vehicles. This code is triggered when the pump's performance deviates from the manufacturer's specifications, potentially leading to overheating of electronic systems.
• Warning light on the dashboard
• Overheating of electronic components
• Reduced vehicle performance
• Faulty coolant pump
• Electrical issues such as wiring or connector problems
• Coolant blockage or low coolant levels
Coolant: A fluid that removes heat from the engine or electronics.
OBD-II: On-Board Diagnostics II, a standardized system for self-diagnostics in vehicles.
• Check for any stored trouble codes and freeze frame data.
• Inspect the coolant pump and related wiring for damage.
• Verify coolant levels and check for blockages.
• Replace or repair the faulty coolant pump.
• Fix any wiring or connector issues.
• Refill coolant and clear any blockages.
• OBD-II scanner
• Multimeter
• Coolant system pressure tester
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly check coolant levels.
• Inspect coolant pump and wiring periodically.
• Ensure proper maintenance of the cooling system.
Performance Issue
• Do not ignore the warning light on the dashboard.
• Get the vehicle checked by a professional if you notice overheating.
• Regular maintenance can prevent this issue.
Check with your vehicle manufacturer as some components may be covered under warranty.
This code is relatively common in older hybrid and electric vehicles as components wear out over time.
Moderate – Addressing this issue promptly can prevent further damage to electronic components.
Ignoring this code may lead to overheating, which can cause safety hazards or legal compliance issues.
• Vehicle must be running.
• Coolant temperature should be within operating range.
The electronics coolant pump is typically located near the hybrid or EV battery pack or electronic control modules.
Q: Can I drive with a P2E42 code?
A: It's not recommended as it could lead to overheating of electronic components.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the coolant system and checking coolant levels can help prevent this code.
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