Idle Speed Control Throttle Position Lower Limit Not Reached
2002-2005 Audi A4 3.0L V6
Description
The ECU detected that the throttle plate cannot reach its lower limit (closed position) during idle speed control. The minimum throttle opening is higher than expected.
Symptoms
- Idle speed too high
- Check Engine Light
- Cannot achieve low idle
- Increased fuel consumption at idle
Common Causes
- Carbon buildup preventing throttle closure
- Throttle body motor binding
- Throttle cable binding (older models)
- Cruise control cable interference
- Damaged throttle body bore
Diagnostic Steps
- Clean throttle body thoroughly
- Check throttle cable (if equipped) for binding
- Perform throttle body adaptation
- Inspect throttle body bore for damage
- Test throttle motor operation
Repair Notes
Clean the throttle body to remove carbon and perform throttle body adaptation.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1564 on Other Vehicles
Common Questions
What does code P1564 mean on a 2002-2005 Audi A4?
P1564 stands for "Idle Speed Control Throttle Position Lower Limit Not Reached". The ECU detected that the throttle plate cannot reach its lower limit (closed position) during idle speed control. The minimum throttle opening is higher than expected.
What are the symptoms of P1564 on a Audi A4?
Common symptoms of P1564 include: Idle speed too high, Check Engine Light, Cannot achieve low idle, Increased fuel consumption at idle.
What causes P1564 on a 2002-2005 Audi A4?
Common causes of P1564 include: Carbon buildup preventing throttle closure, Throttle body motor binding, Throttle cable binding (older models), Cruise control cable interference, Damaged throttle body bore.