2001 Audi A4 Quattro emission

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Condition	Value

expand_moreDiesel exhaust gas values

expand_moreCut-off control speed


All other modifications	4800–5200 rpm4800–5200 rpm4800–5200 rpm


Diesel conditioning gas injections	10
from 60° C engine oil temperature

expand_moreDiesel conditioning speed


All other modifications	4800–5200 rpm4800–5200 rpm4800–5200 rpm
from 60° C engine oil temperature


Maximum K-value	2 1/m2 1/m2 1/m
Measuring mode	B
Measuring sensor	1
Measuring time	0.5 s0.5 s0.5 s
Stoppage time	1 s1 s1 s

expand_moreGeneral exhaust gas values


Diagnostic socket location	The diagnostic socket is located in the central console next to the ashtray.

expand_moreIdling speed with automatic gearbox

expand_moreAll other modifications


ACK engine	640–760 rpm640–760 rpm640–760 rpm
ALG engine	620–740 rpm620–740 rpm620–740 rpm
AMX engine	630–770 rpm630–770 rpm630–770 rpm
APR engine	650–750 rpm650–750 rpm650–750 rpm
AQD engine	670–770 rpm670–770 rpm670–770 rpm

expand_moreIdling speed with manual gearbox

expand_moreAll other modifications


ACK engine	640–760 rpm640–760 rpm640–760 rpm
ALG engine	620–740 rpm620–740 rpm620–740 rpm
AMX engine	630–770 rpm630–770 rpm630–770 rpm
APR engine	650–750 rpm650–750 rpm650–750 rpm
AQD engine	670–770 rpm670–770 rpm670–770 rpm


Minimum engine oil temperature at VET	176°F176°F80°C

expand_morePetrol exhaust gas values

expand_moreCO content at idling speed


All other modifications	0–0.5 %0–0.5 %0–0.5 %

expand_moreCO content at increased idling speed


All other modifications	0–0.3 %0–0.3 %0–0.3 %


Delta lambda	0.03 λ0.03 λ0.03 λ

expand_moreIncreased idling speed

expand_moreAll Audi gasoline V6 2.8 L ACK engines


AMX engine	2500–3200 rpm2500–3200 rpm2500–3200 rpm
Otherwise	2500–2800 rpm2500–2800 rpm2500–2800 rpm


All other modifications	2500–2800 rpm2500–2800 rpm2500–2800 rpm

expand_moreLambda sensor design

expand_moreAll other modifications


AMX engine	Jump type lambda sensor


Lambda value	0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ
Maximum HC content at idling	100 ppm100 ppm100 ppm

expand_morePetrol conditioning speed

expand_moreAll Audi gasoline V6 2.8 L ACK engines


AMX engine	2500–3200 rpm2500–3200 rpm2500–3200 rpm
Otherwise	2500–2800 rpm2500–2800 rpm2500–2800 rpm


All other modifications	2500–2800 rpm2500–2800 rpm2500–2800 rpm

expand_morePetrol conditioning time


All other modifications	120 s120 s120 s

expand_moreSpeed for disturbance variable

expand_moreAll other modifications


ACK engine	540–860 rpm540–860 rpm540–860 rpm
ALG engine	520–840 rpm520–840 rpm520–840 rpm
APR engine	550–850 rpm550–850 rpm550–850 rpm
AQD engine	570–870 rpm570–870 rpm570–870 rpm

expand_moreTest speed for lambda sensor signal


All other modifications	630–770 rpm630–770 rpm630–770 rpm


Voltage swing at test speed	0.3 V0.3 V0.3 V
More than

To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by Audi.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2001 Audi A4 Quattro user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Audi A4 Quattro service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2001 Audi A4 Quattro you're not only saving money, but also also improving your technical skills and learning something new.

2001 Audi A4 Quattro generations

In 2001 Audi offered 2 generations of the A4 Quattro. Emission may vary in different generations. Be sure that you are looking at the rigt modification.

B6

Type 8E2

2001 Audi A4 Quattro B5 facelift Emission

Table of Contents

Conquer your fears and never give up!

2001 Audi A4 Quattro generations

B6

Audi A4 Quattro B5 facelift model years

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