Speed and idle control

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. 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
P0501	Vehicle Speed Sensor A Range/Performance	Check the vehicle speed signal. Refer to → Speed Signal, Checking .	VSS signal, 2.4 mph	ECT - >39.75°C Engine speed, 1520-4520 RPM	3 Sec	2 DCY
P0506	Idle Air Control System RPM Lower Than Expected	Check the Throttle Valve Control Module J338. Refer to → Throttle Valve Control Module J338, Checking	Idle correction deviation >100 RPM	Engine speed, Idle Vehicle speed, 0 mph Accelerator position 0% EVAP purge valve, Closed Altitude, 2600 m ECT, >- 59.25°C	10 Sec	2 DCY
P0507	Idle Air Control System RPM Higher Than Expected	Check the Throttle Valve Control Module J338. Refer to → Throttle Valve Control Module J338, Checking	Idle correction deviation >200 RPM	Engine speed, Idle Vehicle speed, 0 mph Accelerator position 0% EVAP purge valve, Closed Altitude, 2600 m ECT, >- 59.25°C	10 Sec	2 DCY

DTC

Error Message

Diagnostic Procedure

Malfunction Criteria and Threshold Value

Secondary Parameters with Enable Conditions

Monitoring Time Length

Frequency of checks, MIL Illumination

P0501

Vehicle Speed Sensor A Range/Performance

Check the vehicle speed signal. Refer to → Speed Signal, Checking .

VSS signal, 2.4 mph

ECT - >39.75°C
Engine speed, 1520-4520 RPM

3 Sec

2 DCY

P0506

Idle Air Control System RPM Lower Than Expected

Check the Throttle Valve Control Module J338. Refer to → Throttle Valve Control Module J338, Checking

Idle correction deviation >100 RPM

Engine speed, Idle
Vehicle speed, 0 mph

Accelerator position 0%
EVAP purge valve, Closed

Altitude, 2600 m
ECT, >- 59.25°C

10 Sec

2 DCY

P0507

Idle Air Control System RPM Higher Than Expected

Check the Throttle Valve Control Module J338. Refer to → Throttle Valve Control Module J338, Checking

Idle correction deviation >200 RPM

Engine speed, Idle
Vehicle speed, 0 mph

Accelerator position 0%
EVAP purge valve, Closed

Altitude, 2600 m
ECT, >- 59.25°C

10 Sec

2 DCY