BMW DTC P1396 – Crankshaft Position Sensor Segment Timing Plausibility
DTC P1396 meaning on BMW
DTC P1396 on a BMW indicates a fault with the Crankshaft Position Sensor Segment Timing Plausibility. This means that the engine control module (ECM) has detected an implausible signal from the crankshaft position sensor in relation to the camshaft position sensor. The ECM uses these signals to determine the position of the crankshaft and camshaft for proper engine operation.
BMW DTC P1396 symptoms
Symptoms of DTC P1396 on a BMW may include rough idling, engine misfires, hesitation during acceleration, and in some cases, the engine may not start at all. The Check Engine Light will also be illuminated on the dashboard.
BMW DTC P1396 causes
The common causes of DTC P1396 on a BMW include a faulty crankshaft position sensor, a faulty camshaft position sensor, wiring issues in the sensor circuit, or a timing chain that has jumped teeth. It is essential to diagnose the root cause accurately to resolve the issue effectively.
BMW DTC P1396 seriousness
DTC P1396 should not be ignored as it can lead to poor engine performance, reduced fuel efficiency, and potential engine damage if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P1396 on BMW
To diagnose DTC P1396 on a BMW, a diagnostic scan tool capable of reading BMW-specific fault codes is required. The technician will need to perform a thorough inspection of the crankshaft and camshaft position sensors, check the sensor wiring for any damage or loose connections, and inspect the timing chain for proper alignment. Additionally, testing the sensor signals using a multimeter may be necessary to pinpoint the exact cause of the fault.
How to fix DTC P1396 on BMW
Fixing DTC P1396 on a BMW typically involves replacing the faulty crankshaft or camshaft position sensor, repairing any damaged wiring in the sensor circuit, or realigning the timing chain if necessary. It is crucial to use genuine BMW parts and follow the manufacturer’s guidelines for sensor replacement and timing chain adjustment to ensure proper functionality.
How to erase DTC P1396 on BMW
After the underlying issue causing DTC P1396 on a BMW has been resolved, the fault code can be cleared using a diagnostic scan tool. The technician can access the ECM, navigate to the fault code menu, and select the option to clear the code. Once the code is successfully cleared, the Check Engine Light should turn off, indicating that the fault has been addressed.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.