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P1327 Fault Code


You can find information about the P1327 fault code on this page.

BE WARNED! This particular code can mean a different thing depending on what make the car is, check below.

Manufacturer-Specific Meanings

Audi Logo

Audi P1327

"Cyl.3-Knock Contr. Limit Attained"

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BMW Logo

BMW P1327

"Knock Sensor 2 (Bank 1) Low Input"

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Volkswagen Logo

Volkswagen P1327

"Cyl. 3 Knock Control Limit Attained"

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Detailed Manufacturer-Specific Explanations

Audi – CYLINDER 3 KNOCK CONTROL LIMIT ATTAINED

For Audi, fault code P1327 is logged when the powertrain control module (PCM) has detected an issue with the knock sensor for cylinder 3 in the engine.

This happens when the knock sensor for cylinder 3 has reached or exceeded its limit, indicating an issue.

The knock sensors found in an engine are responsible for monitoring the engine to detect any knocks. Knocking is caused by improper and uneven combustion in the various cylinders. This can typically be heard as a knocking or pinging sound.

When a knock is detected, the sensor relays a voltage signal back to the PCM. The PCM has predetermined limits that are used to flag when there is an issue.

When the signal from the sensor exceeds the predetermined range, it represents that there is either a knock present or the sensor is faulty.

Most vehicles typically have at least two knock sensors. For Audi and Volkswagen, the cylinder 3 knock sensor is typically the second sensor.

Knocking can cause serious harm to the engine if ignored for too long. The damage that can occur can also result in very expensive fixes. This makes it very important to resolve this issue quickly as the knock sensor cannot accurately signal the PCM.

It is typically caused by abnormal combustion in the engine. This can be caused by a number of factors, but the most common issue is uneven fuel injection patterns.

The causes can include anything that disrupts the ideal combination of air, fuel, and heat required for proper combustion. However, they can also include damaged components like pistons, gaskets, bearings, and oil lines.

See generic codes: P0333

BMW – KNOCK SENSOR 2 (BANK 1) LOW INPUT

For BMW, fault code P1327 is logged when the powertrain control module (PCM) has detected an issue with the second knock sensor in the first bank of the engine.

This happens when the voltage signal from the knock sensor is below the predetermined allowable limit.

Knock sensors are used to monitor the engine continuously in an attempt to detect a knock. Knocking is a result of abnormal combustion which creates a noise. This is typically described as a knocking or pinging sound.

When a knock is detected, the sensor relays a voltage signal back to the PCM. The PCM has predetermined limits that are used to flag when there is an issue.

Knocking can cause serious harm to the engine if ignored for too long. The damage that can occur can also result in very expensive fixes.

It is very important to have any knock issues fixed as soon as possible to avoid further damage to expensive components.

It is typically caused by abnormal combustion in the engine. This can be caused by a number of factors, but the most common issue is uneven fuel injection patterns.

The causes can include anything that disrupts the ideal combination of air, fuel, and heat required for proper combustion. However, they can also include damaged components like pistons, gaskets, bearings, and oil lines.

See generic codes: P0327 or P0332

Volkswagen – CYLINDER 3 KNOCK CONTROL LIMIT ATTAINED

For Audi and Volkswagen, fault code P1327 represents the same issue. For more information on this issue and similar fault codes, see the above description for Audi P1327.

See generic codes: P0333

P1327 Image

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