Vehicle
2015 Audi A1 1.0L GB
Title
P1558, Replaced Electronic Throttle Control Motor
Complaint
The customer states that the check engine light is on.
Cause
Connected a scan tool and found code P1558 -Throttle Actuator (G186) – Electrical Malfunction. At idle, used a multi-meter to check for the presence of voltage and ground at the electronic throttle valve and found both were present. Used the scan tool to monitor live data and found that the electronic throttle valve parameter was not within specifications. Used a set of fused jumper wires to repeatedly apply voltage and ground to the electronic throttle valve, and found the valve was inoperative. Performed a visual inspection of the electronic throttle valve and found no obvious faults. These test results verified that the electronic throttle control motor was faulty.
Correction
Replaced the electronic throttle control motor, cleared codes, performed a road test and verified that the vehicle operated properly. The check engine light did not illuminate and no fault codes returned.
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