Additional emission regulations
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 |
|---|---|---|---|---|---|---|
| P2400 | Evaporative Emission System Leak Detection Pump Control Circuit/Open |
|
Open circuit 4.5 5.5 V |
|
0.5 Sec |
|
| P2401 | Evaporative Emission System Leak Detection Pump Control Circuit Low |
|
Short to ground 3.0 V |
|
0.5 Sec |
|
| P2402 | Evaporative Emission System Leak Detection Pump Control Circuit High |
|
Short to battery+> 3.0 V |
|
0.5 Sec |
|
| P2403 | Evaporative Emission System Leak Detection Pump Sense Circuit/Open |
|
Contact unable to close, Signal always low |
|
0.5 Sec |
|
| P2404 | Evaporative Emission System Leak Detection Pump Sense Range/Performance |
|
Contact unable to open Signal always high |
|
0.5 Sec |
|
| P2414 | O2 Sensor Exhaust Sample Error (Bank 1 Sensor 1)
|
|
Signal voltage, 3.7-4.8 V |
|
10 Sec |
|
| P2415 | O2 Sensor Exhaust Sample Error (Bank 2 Sensor 1)
|
|
Signal voltage, 3.7-4.8 V |
|
10 Sec |
|
| P2626 | O2 Sensor Pumping Current Trim Circuit/Open (Bank 1 Sensor 1)
|
|
O2S signal front, > 4.8 V |
|
20 Sec |
|
| P2629 | O2 Sensor Pumping Current Trim Circuit/Open (Bank 2 Sensor 1)
|
|
O2S signal front,> 4.8 V |
|
20 Sec |
|