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Genuine VW/Audi Ignition Knock (Detonation) Sensor | 022905377

Audi TT Quattro
VW Jetta, Golf, Touareg, EuroVan, Eos, R32
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P/N: 022905377 Genuine VW/Audi FREE SHIPPING
Knock Sensor
Order By Description.
VW: EuroVan. Golf, GTI. R32. Incl.Harness. All Required. 3.2L, #1. 2.8L. 3.2L, with harness.
Audi: TT. A3. 3.2L, with harness.
Your part is located within diagram as #6.
Cross References:
  • VW022905377

Knock sensors monitor the pre-detonation of the air-fuel mixture in an internal combustion engine. Pre-detonation occurs when part of the air-fuel mixture ignites before normal combustion creating a shockwave that resonates through the engine block that emits an audible knocking or pining sound. When the knock sensor detects the knock or ping, it relays that information to the engine computer so the computer can adjust engine timing and the amount of fuel entering the engine to stop the pre-detonation. Prolonged pre-detonation in one or more cylinders can damage the cylinder walls, pistons, cylinder head gasket, cylinder head, spark plugs, and engine valves.

When a knock sensor detects engine knock for a prolonged timeframe, the engine computer will illuminate the check engine light with a fault code indicating excessive engine knocking that can not be stopped by adjusting timing and fuel entering the engine. Excessive engine pressure due to carbon build-up in a cylinder, excessive engine load, an improperly timed engine, and lower than recommended octane fuel can all cause excessive knocking that the engine computer can not adjust for.

Replacing Your Vehicle's Knock Sensor

Knock sensors are mounted directly to the exterior of the engine block to pick up the vibrations created by pre-detonation. However, due to their location, they can often be challenging to access and may require extensive removal of components such as intake or exhaust manifolds to replace. With that in mind, on average, knock sensors can take between 20 minutes to up to four hours to replace.

View more Genuine VW/Audi Knock Sensors.

Any Genuine brand part is obtained directly through our vehicle dealership network from your vehicle's manufacturer. This is always your best option for getting the exact same part that is being replaced and will be the latest version design.
Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

Frequently Viewed Together

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What This Genuine VW/Audi Ignition Knock (Detonation) Sensor Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

04-09 - TT Quattro
06-06 - TT Quattro

Fuel Type: GAS
07-08 - Eos 3.2, VR6
01-03 - EuroVan
02-05 - Golf GTI, GTI VR6, R32
02-04 - Jetta GLI, GLS, GLX
02-03 - Jetta GLS
Fuel Type: GAS
08-08 - R32
04-07 - Touareg