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 parts cool. It's like if the fan in your computer stopped working.
The P0CE9 code indicates an issue with the control circuit for the electronics coolant pump in a hybrid or electric vehicle. This pump is responsible for circulating coolant to keep the electronic components from overheating.
The P0CE9 code is triggered when the vehicle's Powertrain Control Module (PCM) or Battery Energy Control Module (BECM) detects an open circuit or a fault in the control circuit of the electronics coolant pump 'A'. This pump is crucial for maintaining the optimal temperature of the vehicle's electronic systems, including the battery and inverter.
• Check Engine Light is on
• Reduced hybrid or EV performance
• Overheating of electronic components
• Faulty electronics coolant pump
• Damaged wiring or connectors in the pump circuit
• Faulty PCM or BECM
PCM: Powertrain Control Module
BECM: Battery Energy Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Check for any other related trouble codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the electronics coolant pump for proper operation.
• Replace the electronics coolant pump if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the PCM or BECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular inspection of coolant pump and electrical connections
• Routine maintenance of cooling system
• Prompt attention to overheating issues
Circuit Issue
• Avoid driving the vehicle until the issue is resolved to prevent damage.
• Consult a professional mechanic for a thorough diagnosis.
Check with your vehicle manufacturer for warranty coverage on hybrid/EV components.
This code has become more common with the increase in hybrid and electric vehicles, as maintaining proper cooling is critical for their operation.
High – This issue can lead to overheating and potential damage to expensive electronic components if not addressed promptly.
Driving with this code active may lead to further damage and is not recommended. Always ensure your vehicle is safe to operate.
• Vehicle at operating temperature
• Hybrid/EV system active
The electronics coolant pump is usually located near the battery or inverter assembly, often in the engine compartment or under the vehicle.
Q: Can I drive my car with a P0CE9 code?
A: It's not recommended to drive with this code active, as it may lead to overheating and damage to the vehicle's electronics.
Q: How do I reset the P0CE9 code?
A: After repairs, you can use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent it from returning.
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