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 engine cool. It's like when a fan in your room doesn't turn on because the switch is broken.
The P144D code indicates a low voltage condition in the fan safety relay circuit, which is responsible for controlling the cooling fan operation.
The fan safety relay circuit is responsible for ensuring that the cooling fan operates correctly to prevent the engine from overheating. A 'low' condition means that the circuit is not receiving enough voltage, which could prevent the fan from turning on when needed.
• Engine overheating
• Cooling fan not operating
• Check Engine Light illuminated
• Faulty fan safety relay
• Wiring issues such as shorts or open circuits
• Failed fan motor
Relay: An electrical device that opens or closes a circuit under the control of another electrical circuit.
Circuit: A closed path through which an electric current flows or may flow.
• Inspect the fan safety relay for damage or corrosion.
• Check the wiring and connectors for any signs of damage.
• Test the fan motor for proper operation.
• Replace the faulty fan safety relay.
• Repair or replace damaged wiring or connectors.
• Replace the fan motor if it is not functioning.
• Multimeter
• Screwdriver set
• Relay puller tool
$150 - $400
Moderate
• Ford Focus
• Chevrolet Malibu
• Toyota Camry
• Regularly inspect the cooling fan system.
• Ensure electrical connections are secure and free of corrosion.
• Perform routine maintenance checks.
Electrical Circuit Issue
• Avoid driving the vehicle until the issue is resolved to prevent overheating.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code is commonly associated with vehicles that have known issues with cooling fan relays and wiring harnesses.
High – Immediate attention is required to prevent engine damage due to overheating.
Driving with an overheating engine can cause severe damage and is unsafe. Address this issue promptly.
• Engine running
• Cooling system operational
The fan safety relay is typically located in the engine bay, within the fuse and relay box.
Q: Can I drive with a P144D code?
A: It's not recommended as it can lead to engine overheating and potential damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspection of the cooling system can help prevent this issue.
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