What features does the KE 111-Jetronic system have regarding fault memory and how can one check the oxygen sensor and other components on Audi 80?

The KE 111-Jetronic system features a fault memory that encompasses both the fuel injection and ignition systems. To check the lambda control, connect a digital multimeter to the differential pressure regulator, let the engine idle for two minutes at normal operating temperature, and observe the control current. After removing the dipstick, if the control current does not increase, disconnect the lambda probe wires and ground the green wire for about twenty seconds; a change in control current indicates a faulty lambda probe. For cold acceleration enrichment, disconnect the temperature sender wiring plug and connect a digital potentiometer with a resistance of 3 kilohms, such as the VAG digital potentiometer 1630. While running the engine at idle, note the control current and quickly open and close the throttle valves, ensuring the control current briefly rises to at least 6 mA. To test the cold start valve, remove it and hold it over a measuring beaker, then operate the starter to check for an even 'cone' spray pattern for two to three seconds. After wiping the valve dry, confirm it remains dry for at least a minute. The throttle valve switches monitor the closed and fully-open positions of the throttle, requiring special test leads for testing, which is best performed by an Audi dealer. For the diaphragm pressure switch, additional details can be found in the relevant sections.

How should oxygen sensors be serviced to avoid damage and ensure proper installation on Audi A4?

The catalytic converter(s) are fitted with oxygen sensors, which may be hard to loosen when the engine is cold because of contraction. One should begin and run the engine at least one minute or two to prevent burns when removing threads of the sensor and mounting it on the engine. When replacing an oxygen sensor, be careful about the pigtail and electrical connector permanently fixed to it, do not damage or take them out. Always keep the electrical connector, and the louvered end, clean and dry, and never apply any cleaning solvents on the sensor. Oxygen sensors are very sensitive hence should not be dropped or roughly handled and the silicone boot should be aligned well so as to avoid melting and malfunctioning of the oxygen sensor. In the case of upstream sensors, find and unconnect the electrical connector, and unattach the sensor harness to clips and unscrew the sensor with a oxygen sensor socket in tight spaces. When replacing an old sensor, it is necessary to put anti-seize compound on the threads; with new sensors, this is not necessary since they already have it. The reverse order is followed in installation with appropriate torque. In the case of downstream sensors, lift the vehicle and find and un-plug the electrical connector, unscrew the sensor, and apply an anti-seize compound in case of replacing the old sensor. Once again, installation is the opposite of the removal process and the proper torque is taken into consideration.

Genuine Audi Oxygen Sensor

Oxygen O2 Sensor

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133 Oxygen Sensors found

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Audi Rear Oxygen Sensor Part Number: 06K-906-262-AP
$97.34 MSRP: $136.30
You Save: $38.96 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sen; Rear Oxygen Sensor
Fits the following Audi Models:
- Q3 | 2021-2024 | Premium, Premium Plus | 4 Cyl 2.0 L GAS
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Audi Front Oxygen Sensor Part Number: 06K-906-262-CJ
$88.05 MSRP: $123.32
You Save: $35.27 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sen; Front Oxygen Sensor, Oxygen Sensor
Fits the following Audi Models:
- A3 | 2022-2024 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A3 Quattro | 2022-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi Rear Oxygen Sensor Part Number: 80A-906-265
$104.71 MSRP: $146.65
You Save: $41.94 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 8W0-906-265-S
Fits the following Audi Models:
- A6 Quattro | 2019-2023 | Premium, Premium Plus | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 | 2019-2023 | Premium, Premium Plus, Prestige, Titanium Premium, Titanium Premium Plus, Titanium Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 PHEV | 2020-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- Q5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q7 | 2017-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Front Oxygen Sensor Part Number: 8W0-906-265-AP
$92.82 MSRP: $130.00
You Save: $37.18 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sen; Front Oxygen Sensor, Oxygen Sensor
Fits the following Audi Models:
- A4 | 2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 Quattro | 2020-2023 | Premium, Premium Plus, Prestige, Ultra sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A4 allroad | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Quattro | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A6 Quattro | 2022-2023 | Premium, Premium Plus | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- S4 | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi Front Oxygen Sensor Part Number: 06L-906-265-B
$118.95 MSRP: $166.60
You Save: $47.65 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sen; Front Oxygen Sensor, Oxygen Sensor
Fits the following Audi Models:
- A6 Quattro | 2019-2023 | Premium, Premium Plus | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A7 Sportback | 2021-2022 | Premium Plus, Prestige | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- Q5 | 2019-2023 | Premium, Premium Plus, Prestige, Titanium Premium, Titanium Premium Plus, Titanium Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 PHEV | 2020-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- Q7 | 2017-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Rear Oxygen Sensor Part Number: 1K0-998-262-AE
$148.74 MSRP: $208.32
You Save: $59.58 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor Kt; Oxygen Sensor
- Position: Rear
- Replaces: 03L-906-262-C, 07Z-906-262-E, 07Z-906-262-G, 03G-906-262, 07Z-906-262-D, 06A-906-262-DE, 07Z-906-262-F
Fits the following Audi Models:
- A3 | 2010-2013 | TDI | 4 Cyl 2.0 L DIESEL
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Audi Rear Oxygen Sensor Part Number: 8W0-906-265-AQ
$102.70 MSRP: $143.83
You Save: $41.13 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
Fits the following Audi Models:
- A4 | 2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 Quattro | 2020-2023 | Premium, Premium Plus, Prestige, Ultra sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A4 allroad | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Quattro | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- S4 | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi Front Oxygen Sensor Part Number: 03C-906-262-B
$119.70 MSRP: $167.65
You Save: $47.95 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor
- Position: Front
Fits the following Audi Models:
- A8 Quattro | 2005-2007 | L | 12 Cyl 6.0 L GAS
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Audi Rear Oxygen Sensor Part Number: 06K-906-262-CF
$155.88 MSRP: $218.32
You Save: $62.44 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 06K-906-262-BA
Fits the following Audi Models:
- A3 | 2019-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- A3 Quattro | 2019-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- S3 | 2019-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- TT Quattro | 2019-2023 | Base | 4 Cyl 2.0 L GAS
- TTS Quattro | 2019-2023 | Base | 4 Cyl 2.0 L GAS
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Audi Front Oxygen Sensor Part Number: 0P2-906-265-AE
$298.58 MSRP: $418.18
You Save: $119.60 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sen; Front Oxygen Sensor, Oxygen Sensor
Fits the following Audi Models:
- RS Q8 | 2020-2023 | Base | 8 Cyl 4.0 L MILD HYBRID EV-GAS (MHEV)
- SQ7 | 2020-2023 | Premium Plus, Prestige | 8 Cyl 4.0 L MILD HYBRID EV-GAS (MHEV)
- SQ8 | 2020-2023 | Premium Plus, Prestige | 8 Cyl 4.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Upper Oxygen Sensor Part Number: 04E-906-262-AK
$96.39 MSRP: $134.99
You Save: $38.60 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor
- Position: Upper
Fits the following Audi Models:
- A3 Sportback e-tron | 2016-2018 | Premium, Premium Plus, Prestige | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Audi Rear Oxygen Sensor Part Number: 8K0-906-262-G
$141.61 MSRP: $198.33
You Save: $56.72 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor
- Position: Rear
Fits the following Audi Models:
- A4 | 2018-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- A4 Quattro | 2018-2021 | Premium, Premium Plus, Prestige, Ultra sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Rear Oxygen Sensor Part Number: 4M8-906-265-G
$246.33 MSRP: $345.01
You Save: $98.68 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 8W0-906-265-AB
Fits the following Audi Models:
- Q8 | 2019 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- S6 | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
- S7 Sportback | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
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Audi Rear Oxygen Sensor Part Number: 07K-906-262-H
$170.17 MSRP: $238.33
You Save: $68.16 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 07K-906-265-B
Fits the following Audi Models:
- RS3 | 2022-2024, 2017-2020 | Base | 5 Cyl 2.5 L GAS
- TT Quattro | 2019-2021 | Base | 4 Cyl 2.0 L GAS
- TT RS Quattro | 2018-2022 | Base, Heritage Edition | 5 Cyl 2.5 L GAS
- TTS Quattro | 2019-2021 | Base | 4 Cyl 2.0 L GAS
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Audi Front Oxygen Sensor Part Number: 06M-906-265-A
$188.37 MSRP: $263.82
You Save: $75.45 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sen; Front Oxygen Sensor, Oxygen Sensor
- Replaces: 8W0-906-265-L
Fits the following Audi Models:
- RS5 | 2021-2024, 2018-2019 | Base | 6 Cyl 2.9 L GAS
- RS5 Sportback | 2021-2024, 2019 | Base | 6 Cyl 2.9 L GAS
- S6 | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
- S7 Sportback | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
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Audi Rear Oxygen Sensor Part Number: 4H0-906-265-D
$190.63 MSRP: $266.99
You Save: $76.36 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor
- Position: Left
Fits the following Audi Models:
- A8 Quattro | 2013-2018 | Base, L | 6 Cyl 3.0 L GAS
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Audi Rear Oxygen Sensor Part Number: 4M0-906-265-F
$193.97 MSRP: $271.67
You Save: $77.70 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 06E-906-265-AN
Fits the following Audi Models:
- Q7 | 2017-2019 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi Rear Oxygen Sensor Part Number: 8W0-906-265-AK
$192.78 MSRP: $270.00
You Save: $77.22 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
- Position: Left
- Replaces: 8W0-906-265-C
Fits the following Audi Models:
- RS5 | 2021-2024, 2018-2019 | Base | 6 Cyl 2.9 L GAS
- RS5 Sportback | 2021-2024, 2019 | Base | 6 Cyl 2.9 L GAS
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Audi Rear Oxygen Sensor Part Number: 8W0-906-262-G
$184.45 MSRP: $258.33
You Save: $73.88 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sen; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 80A-906-262, 8K0-906-262-F
Fits the following Audi Models:
- A4 | 2017-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- A4 Quattro | 2017-2020 | Premium, Premium Plus, Prestige, Ultra sport | 4 Cyl 2.0 L GAS
- A4 allroad | 2017-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A5 Quattro | 2018-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A5 Sportback | 2018-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- Q5 | 2018-2019 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- Q7 | 2017-2019 | Premium, Premium Plus | 4 Cyl 2.0 L GAS
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Audi Rear Oxygen Sensor Part Number: 078-906-265-F
$157.08 MSRP: $220.00
You Save: $62.92 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sensor; Rear Oxygen Sensor
- Position: Left
Fits the following Audi Models:
- A4 | 1996-2001 | Avant, Base | 6 Cyl 2.8 L GAS
- A4 Quattro | 1996-2001 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 | 1996-2001 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 1996-2001 | Avant, Base | 6 Cyl 2.8 L GAS
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Audi Oxygen Sensor

The role of the Audi oxygen sensor in regulating fuel emissions is vital for better engine performance and fuel economy. It monitors exhaust gas and deposits developed by the engine, thus providing data about the air-fuel ratio. Whenever the ratio is below or above normal, the sensor relays information to the engine control system for precise fuel mixture adjustment. Fluctuating idle speed and a sudden decrease in gas mileage are some telltale symptoms of a bad oxygen sensor. Heated sensors should be changed after 100,000 miles, while unheated sensors after 50,000 miles.

It is better to choose OEM parts when it comes to the time for fixing them. Why? Because they fit perfectly well and ensure safety. For people who prefer doing their maintenance, the genuine Audi Oxygen Sensor is quite perfect. At AudiPartsGiant.com, we specialize in genuine Audi Oxygen Sensors only. Also, we offer an extensive online catalog with many categories, ample stock, and secure shopping. The Audi Oxygen Sensor is shipped directly from authorized Audi dealers at competitive prices. So trust us, and we will give you nothing but superior service. Depend on us for all your genuine parts needs, and then we will keep your automobile moving smoothly.

Audi Oxygen Sensor Parts and Q&A

Oxygen Sensor
034-906-265-F
Q: What features does the KE 111-Jetronic system have regarding fault memory and how can one check the oxygen sensor and other components on Audi 80?
A:
The KE 111-Jetronic system features a fault memory that encompasses both the fuel injection and ignition systems. To check the lambda control, connect a digital multimeter to the differential pressure regulator, let the engine idle for two minutes at normal operating temperature, and observe the control current. After removing the dipstick, if the control current does not increase, disconnect the lambda probe wires and ground the green wire for about twenty seconds; a change in control current indicates a faulty lambda probe. For cold acceleration enrichment, disconnect the temperature sender wiring plug and connect a digital potentiometer with a resistance of 3 kilohms, such as the VAG digital potentiometer 1630. While running the engine at idle, note the control current and quickly open and close the throttle valves, ensuring the control current briefly rises to at least 6 mA. To test the cold start valve, remove it and hold it over a measuring beaker, then operate the starter to check for an even 'cone' spray pattern for two to three seconds. After wiping the valve dry, confirm it remains dry for at least a minute. The throttle valve switches monitor the closed and fully-open positions of the throttle, requiring special test leads for testing, which is best performed by an Audi dealer. For the diaphragm pressure switch, additional details can be found in the relevant sections.
Rear Oxygen Sensor
06E-906-265-D
Q: How should oxygen sensors be serviced to avoid damage and ensure proper installation on Audi A4?
A:
The catalytic converter(s) are fitted with oxygen sensors, which may be hard to loosen when the engine is cold because of contraction. One should begin and run the engine at least one minute or two to prevent burns when removing threads of the sensor and mounting it on the engine. When replacing an oxygen sensor, be careful about the pigtail and electrical connector permanently fixed to it, do not damage or take them out. Always keep the electrical connector, and the louvered end, clean and dry, and never apply any cleaning solvents on the sensor. Oxygen sensors are very sensitive hence should not be dropped or roughly handled and the silicone boot should be aligned well so as to avoid melting and malfunctioning of the oxygen sensor. In the case of upstream sensors, find and unconnect the electrical connector, and unattach the sensor harness to clips and unscrew the sensor with a oxygen sensor socket in tight spaces. When replacing an old sensor, it is necessary to put anti-seize compound on the threads; with new sensors, this is not necessary since they already have it. The reverse order is followed in installation with appropriate torque. In the case of downstream sensors, lift the vehicle and find and un-plug the electrical connector, unscrew the sensor, and apply an anti-seize compound in case of replacing the old sensor. Once again, installation is the opposite of the removal process and the proper torque is taken into consideration.