Throttle Actuation Potentiometer Signal Too High
2022-2024 Audi Q4 e-tron Electric
Description
The ECU detected that the throttle actuation potentiometer signal voltage is higher than the maximum expected value. This may indicate an open ground circuit or sensor failure.
Symptoms
- Check Engine Light
- Limp mode with limited throttle
- Engine may idle only
- Erratic throttle response
Common Causes
- Open ground wire to throttle body
- Faulty throttle position potentiometer
- Connector pin backed out
- Throttle body internal fault
- ECU reference voltage issue
Diagnostic Steps
- Measure potentiometer signal voltage
- Check ground circuit continuity
- Inspect connector for backed-out pins
- Test reference voltage from ECU
- Compare both potentiometer readings
Repair Notes
Repair the open circuit or replace the throttle body assembly.
Related Codes
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1544 on Other Vehicles
Common Questions
What does code P1544 mean on a 2022-2024 Audi Q4 e-tron?
P1544 stands for "Throttle Actuation Potentiometer Signal Too High". The ECU detected that the throttle actuation potentiometer signal voltage is higher than the maximum expected value. This may indicate an open ground circuit or sensor failure.
What are the symptoms of P1544 on a Audi Q4 e-tron?
Common symptoms of P1544 include: Check Engine Light, Limp mode with limited throttle, Engine may idle only, Erratic throttle response.
What causes P1544 on a 2022-2024 Audi Q4 e-tron?
Common causes of P1544 include: Open ground wire to throttle body, Faulty throttle position potentiometer, Connector pin backed out, Throttle body internal fault, ECU reference voltage issue.