Speed and idle control

WARNING: This page is about a different car, the 2008 Volkswagen R32. However, it is still accessible from the selected car via links, so may be relevant.

DTC	Error Message	Diagnostic Procedure	Malfunction Criteria and Threshold Value	Secondary Parameters with Enable Conditions	Monitoring Time Length	Frequency of checks, MIL Illumination
P050A	Cold Start Idle Air Control System Performance	-- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING	Out of range low Engine speed deviation, < -100 RPM And idle controller at max. value 9% Out of range high Engine speed deviation, >100 RPM And idle controller at min. value -10%	Engine speed, Idle Vehicle speed, 0 km/h Altitude, < 2700 m Engine load, <28.5-33.75% ECT, >20.30° C IAT, >-47.30° C Vehicle speed, Ready, no fault EVAP purge valve, Closed	7 Seconds 15 Seconds	Multiple 2 DCY
P0501	Vehicle Speed Sensor A Range/Performance	-- Refer to SPEED SIGNAL, CHECKING .	VSS signal, < 3.00 km/h	Fuel cut off, 4 Sec. Engine speed, 920-4520 RPM	4 Seconds	Multiple 2 DCY
P0506	Idle Air Control System RPM Lower Than Expected	-- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING	Engine speed deviation, < -100 RPM And idle controller at max. value 9%	Engine speed, Idle Vehicle speed, 0 km/h Altitude, < 2700 m Engine load, <28.5-32.75% ECT, >20.30° C IAT, >-47.30° C Vehicle speed, Ready, no fault EVAP purge valve, Closed	15 Seconds	Multiple 2 DCY
P0507	Idle Air Control System RPM Higher Than Expected	-- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING	Engine speed deviation, >80 RPM And idle controller at max. value -10%	Engine speed, Idle Vehicle speed, 0 km/h Altitude, < 2700 m ECT, >20.30° C IAT, >-47.30° C Vehicle speed, Ready, no fault EVAP purge valve, Closed	15 Seconds	Multiple 2 DCY