BMW DTC P1329 – Knock/Combustion Vibration Sensor 3 Circuit Low (Bank 2)
DTC P1329 meaning on BMW
DTC P1329 on a BMW indicates a Knock/Combustion Vibration Sensor 3 Circuit Low fault in Bank 2. This fault code is triggered when the engine control module (ECM) detects a low voltage signal from the knock sensor located in Bank 2 of the engine.
BMW DTC P1329 symptoms
Symptoms of DTC P1329 on a BMW may include engine knocking or pinging noises, reduced engine performance, rough idling, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P1329 causes
The common causes of DTC P1329 on a BMW include a faulty knock sensor, wiring issues in the sensor circuit, poor electrical connections, or a malfunctioning engine control module (ECM).
BMW DTC P1329 seriousness
Ignoring DTC P1329 on a BMW can lead to engine damage, reduced fuel efficiency, and potential drivability issues. It is important to address this fault code promptly to prevent further damage to the engine.
How to diagnose DTC P1329 on BMW
To diagnose DTC P1329 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and perform a visual inspection of the knock sensor and its wiring. They may also test the sensor’s resistance and check for any loose connections or damaged wiring.
How to fix DTC P1329 on BMW
Fixing DTC P1329 on a BMW usually involves replacing the faulty knock sensor, repairing any damaged wiring or connectors, and ensuring proper connection to the ECM. Once the repairs are made, the fault code should be cleared, and the vehicle should be test-driven to confirm that the issue has been resolved.
How to erase DTC P1329 on BMW
To erase DTC P1329 on a BMW, a diagnostic scanner can be used to clear the fault code from the ECM’s memory. After the fault code is cleared, the Check Engine Light should turn off. It is important to verify that the issue has been resolved by driving the vehicle and ensuring that the fault code does not return.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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