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 part of the car that helps keep the electric motor cool. It's like a fan for the motor, and it's not working right all the time.
The P0E50 code indicates an issue with the control circuit for the secondary motor electronics coolant pump, which is not operating consistently.
The P0E50 code is triggered when the Engine Control Module (ECM) detects an intermittent or erratic signal from the control circuit of the secondary motor electronics coolant pump. This pump is responsible for circulating coolant to regulate the temperature of the motor electronics, ensuring optimal performance and preventing overheating.
• Check Engine Light illuminated
• Overheating of motor electronics
• Reduced vehicle performance
• Faulty motor electronics coolant pump B
• Wiring issues or poor connections in the control circuit
• Malfunctioning ECM or control module
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections for damage or corrosion.
• Test the coolant pump operation and control circuit continuity.
• Replace or repair damaged wiring or connectors.
• Replace the motor electronics coolant pump B if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance and inspection of the cooling system.
• Ensure proper coolant levels and quality.
• Address any Check Engine Light warnings promptly.
Control Circuit Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you notice overheating.
• Maintain regular service intervals to prevent such issues.
Check with the vehicle manufacturer for warranty coverage on the cooling system components.
This code has been associated with hybrid and electric vehicles where motor electronics require efficient cooling.
Moderate – Addressing this issue promptly can prevent more serious overheating problems.
Driving with an overheating motor can lead to severe damage and is unsafe. Address this issue promptly.
• Engine running at operating temperature.
• Vehicle in a safe, stationary position.
The motor electronics coolant pump B is typically located near the motor or within the engine compartment.
Q: Can I drive with a P0E50 code?
A: It's not recommended as it could lead to overheating and further damage.
Q: How can I reset the P0E50 code?
A: You can reset the code using an OBD-II scanner, but it's important to fix the underlying issue first.
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