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 controls how fast the engine runs when you're not pressing the gas pedal. It's like the car's brain is having trouble resetting this part.
The P152F code indicates that the engine control module (ECM) has detected an issue with the idle speed control valve's ability to reset or adjust properly.
The idle speed control valve is responsible for regulating the engine's idle speed by controlling the amount of air entering the engine when the throttle is closed. A reset error means the ECM cannot properly monitor or adjust the valve, potentially due to a malfunction or blockage.
• Engine stalls at idle
• Erratic or high idle speed
• Check Engine Light illuminated
• Faulty idle speed control valve
• Wiring issues or poor electrical connections
• ECM software glitch or failure
ECM: Engine Control Module, the computer that controls engine functions
Idle Speed Control Valve: A device that regulates the engine's idle speed
• Use an OBD-II scanner to confirm the code
• Inspect the idle speed control valve for damage or blockage
• Check wiring and connections for continuity and corrosion
• Clean or replace the idle speed control valve
• Repair or replace damaged wiring or connectors
• Update or reprogram the ECM if necessary
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• BMW 3 Series
• Ford Focus
• Honda Accord
• Regular maintenance and cleaning of the throttle body
• Periodic inspection of electrical connections
• Software updates for the ECM
Engine Performance
• Avoid driving the vehicle until the issue is resolved to prevent stalling.
• Consult with a professional mechanic for accurate diagnosis and repair.
Check if the vehicle is still under warranty for potential coverage of ECM or idle control valve issues.
This code has been more prevalent in vehicles with higher mileage and those that have not had regular maintenance.
Moderate – It should be addressed soon to avoid potential stalling or further engine issues.
Ignoring this code could lead to unsafe driving conditions due to potential engine stalling.
• Engine at normal operating temperature
• Vehicle at idle
The idle speed control valve is typically located on the throttle body, near the intake manifold.
Q: Can I drive with a P152F code?
A: It's not recommended as it may cause the engine to stall unexpectedly.
Q: How often should the idle control valve be cleaned?
A: It should be inspected and cleaned during regular maintenance, typically every 30,000 to 50,000 miles.
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