P1504
Intake Air Control Circuit Malfunction
P1504 is an OBD-II diagnostic trouble code meaning: Intake Air Control Circuit Malfunction. Common causes: air control sensor malfunction, open or short circuit in the circuit. Estimated repair cost: $17–67.
Symptoms
- Unstable engine idling
- Increased fuel consumption
- Reduced engine power
- Dips when pressing the gas pedal
- Check Engine Light Illuminates
Causes
- Air control sensor malfunction
- Open or short circuit in the circuit
- Problems with the control solenoid valve
- Control mechanism is dirty or jammed
- Engine control unit malfunction
How to Fix
- Check the integrity of wiring and connections
- Test the air control sensor
- Check the operation of the solenoid valve
- Clean the control mechanism from dirt
- If necessary, replace faulty components
Related codes
Error P1504 by Vehicle Brand
FAQ
What does the P1504 code mean?
P1504 is an OBD-II diagnostic trouble code that indicates: Intake Air Control Circuit Malfunction
What causes a P1504 error code?
The most common causes of P1504 include: Air control sensor malfunction; Open or short circuit in the circuit; Problems with the control solenoid valve; Control mechanism is dirty or jammed.
How do I fix a P1504 diagnostic trouble code?
To fix P1504: Check the integrity of wiring and connections. Test the air control sensor. Check the operation of the solenoid valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1504?
Limited driving only, diagnose soon
How much does it cost to fix P1504?
The estimated repair cost for P1504 is $17–67. Actual cost depends on your vehicle, location, and labor rates.
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