P1508 Code - Idle Air Control Valve Circuit Malfunction
Quick Answer
The target idle speed is in the Engine Control Module (ECM) memory for various engine conditions (coolant temperature, A/C operation and so on). Common causes include Faulty Idle Air Control Valve, Idle Air Control Valve harness is open or shorted, Idle Air Control Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1508 indicates Idle Air Control Valve Circuit Malfunction.
- Common causes
- Common causes include Faulty Idle Air Control Valve, Idle Air Control Valve harness is open or shorted, Idle Air Control Valve circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1508 Description
What are the Possible Causes of the DTC P1508?
- Faulty Idle Air Control Valve
- Idle Air Control Valve harness is open or shorted
- Idle Air Control Valve circuit poor electrical connection
How to Fix the DTC P1508?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1508 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1508 code?
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Need Help with the Code?
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Information for Specific Makes
- P1508 Acura — Idle Air Control Valve Circuit Malfunction
- P1508 Audi — Idle System Learned Value Upper Limit Attained
- P1508 BMW — Idle Speed Control Valve Opening Solenoid Control Open Circuit
- P1508 Buick — Idle Speed Low Idle Air Control System Not Responding
- P1508 Cadillac — Idle Speed Low Idle Air Control System Not Responding
- P1508 Chevrolet — Idle Speed Low Idle Air Control System Not Responding
- P1508 Chrysler — Ambient/Battery Temperature Sensor Volts Too Low
- P1508 Dodge — Ambient/Battery Temperature Sensor Volts Too Low
- P1508 GMC — Idle Speed Low Idle Air Control System Not Responding
- P1508 Honda — Idle Air Control Valve Circuit Malfunction
- P1508 Hyundai — Idle Speed Control Actuator Signal High
- P1508 Isuzu — IAC System RPM Low
- P1508 Jaguar — Idle Air Control Valve Circuit Malfunction
- P1508 KIA — Idle Air Control Valve Closing Coil Voltage High
- P1508 Lexus — PTC AC Auxiliary Heater Disabled High
- P1508 Mazda — Idle Air Control Valve Circuit Malfunction
- P1508 MINI — Idle Speed Control Valve Opening Solenoid Control Open Circuit
- P1508 Volkswagen — Idle System Learned Value Upper Limit Attained
Frequently Asked Questions about P1508 Code
No Frequently Asked Questions about P1508 Code found.
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