BMW DTC P1301 – Ignition Monitoring Cylinder 1 Spark Duration Too Short
DTC P1301 meaning on BMW
The DTC P1301 on a BMW indicates that the ignition monitoring system has detected that the spark duration for cylinder 1 is too short. This means that the spark plug in cylinder 1 is not firing for the correct amount of time, which can lead to issues with combustion and engine performance.
BMW DTC P1301 symptoms
Symptoms of DTC P1301 on a BMW may include rough idling, misfiring, loss of power, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P1301 causes
The common causes of DTC P1301 on a BMW include a faulty ignition coil, a worn-out spark plug, poor electrical connections, or issues with the engine control module (ECM).
BMW DTC P1301 seriousness
Ignoring DTC P1301 on a BMW can lead to further engine damage, decreased fuel efficiency, and potential drivability issues. It is important to address this issue promptly to prevent more severe problems.
How to diagnose DTC P1301 on BMW
To diagnose DTC P1301 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes and then perform a visual inspection of the ignition system components, such as the ignition coil and spark plug in cylinder 1. They may also test the electrical connections and perform a compression test to ensure the engine is functioning properly.
How to fix DTC P1301 on BMW
To fix DTC P1301 on a BMW, the faulty ignition coil or spark plug in cylinder 1 should be replaced. Additionally, any poor electrical connections should be repaired, and the engine control module should be checked for any issues. Once the necessary repairs are made, the fault codes can be cleared, and the vehicle can be test-driven to ensure the issue has been resolved.
How to erase DTC P1301 on BMW
To erase DTC P1301 on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the ECM. After the repairs have been completed and the issue has been resolved, the fault codes can be cleared to turn off the Check Engine Light and ensure that the vehicle is running properly.
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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