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 control the engine's speed when it's not moving. It's like if your toy car's motor wasn't running smoothly when it was just sitting still.
The P1507 code indicates that the engine control module (ECM) has detected a low voltage or malfunction in the idle speed control valve's opening solenoid circuit.
The idle speed control valve is responsible for maintaining the engine's idle speed. The opening solenoid within the valve adjusts the air flow to the engine when it is idling. A low circuit condition suggests an electrical issue such as a short, open circuit, or a failed solenoid.
• Engine stalls at idle
• Erratic or fluctuating idle speed
• Check Engine Light illuminated
• Faulty idle speed control valve
• Open or shorted wiring in the control circuit
• Poor electrical connection at the idle speed control valve
ECM: Engine Control Module
Solenoid: An electromechanical device used to control a valve
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connectors to the idle speed control valve for damage.
• Test the idle speed control valve solenoid for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the idle speed control valve if faulty.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $300
Moderate
• Ford Focus
• Hyundai Elantra
• Subaru Impreza
• Regularly inspect and clean the idle speed control valve.
• Ensure electrical connections are secure and free of corrosion.
• Perform routine maintenance as per the vehicle's manual.
Engine Performance
• If you notice your car stalling or idling roughly, have it checked promptly.
• Regular maintenance can prevent such issues.
Check with your vehicle manufacturer to see if the idle speed control system is covered under warranty.
This code has been commonly associated with idle control issues in vehicles with electronic throttle control systems.
Moderate – While the car may still be drivable, it can stall unexpectedly, posing a safety risk.
Driving with a malfunctioning idle speed control can lead to unexpected engine stalling, which can be dangerous.
• Engine at operating temperature
• Vehicle in park or neutral
The idle speed control valve is typically located on or near the throttle body of the engine.
Q: Can I drive with a P1507 code?
A: It's possible to drive, but the car may stall unexpectedly, which could be dangerous.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.