Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks the part that controls how fast the engine idles isn't working right. It's like when a toy car's remote control doesn't make it go the right speed.
The engine control module (ECM) monitors the idle speed control valve to ensure it maintains the correct engine idle speed. If the actual value differs from the expected value, this code is triggered.
The P152D code indicates that the ECM has detected an incorrect actual value from the idle speed control valve on bank 1. This can be due to a malfunction in the valve itself, wiring issues, or a problem with the ECM's interpretation of the valve's feedback.
• Engine idles erratically
• Check Engine Light is on
• Poor fuel economy
• Faulty idle speed control valve
• Wiring or connector issues
• Faulty ECM
ECM: Engine Control Module
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 and its wiring.
• Test the valve's operation and replace if necessary.
• Replace the idle speed control valve.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if needed.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• BMW 3 Series
• Audi A4
• Volkswagen Passat
• Regular maintenance checks
• Ensure clean and secure electrical connections
• Use quality fuel to prevent deposits
Engine Performance
• Avoid driving with this code active for long periods.
• Have the issue diagnosed by a professional mechanic.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with idle control issues in vehicles with electronic throttle control systems.
Moderate – It should be addressed soon to prevent further engine performance issues.
Ignoring this code can lead to increased emissions and potential safety concerns due to erratic engine behavior.
• Engine at operating temperature
• Vehicle in idle state
The idle speed control valve is typically located near the throttle body on the intake manifold.
Q: Can I drive with a P152D code?
A: It's not recommended to drive for long with this code, as it can lead to poor engine performance and increased emissions.
Q: What happens if I ignore the P152D code?
A: Ignoring the code can lead to further engine performance issues and potential damage to the engine.
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