Fuel and air mixture, additional emissions 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
P3081	Engine Temperature Too Low (BGN only)	Check the Engine Coolant Temperature (ECT) Sensor G62. Refer to → Engine Coolant Temperature (ECT) Sensor G62, Checking .	Measured ECT minus ECT, >9.75K	---	2 Sec	Once/DCY 2 DCY
P3262	Exhaust bank 1/2 oxygen sensors behind catalytic converter swapped		Threshold high side > 680 mV Threshold low side 221 mV	Lambda controller Closed loop Rear O2 sensor heater and electrical check No fault Engine speed 1000 - 4000 RPM Engine load 20-50% Catalyst temperature > 345°C	30 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

P3081

Engine Temperature Too Low

(BGN only)

Check the Engine Coolant Temperature (ECT) Sensor G62. Refer to → Engine Coolant Temperature (ECT) Sensor G62, Checking .

Measured ECT minus ECT, >9.75K

---

2 Sec

Once/DCY
2 DCY

P3262

Exhaust bank 1/2 oxygen sensors behind catalytic converter swapped

Threshold high side > 680 mV
Threshold low side 221 mV

Lambda controller Closed loop
Rear O2 sensor heater and electrical check No fault

Engine speed 1000 - 4000 RPM
Engine load 20-50%

Catalyst temperature > 345°C

30 Sec

2 DCY