BMW DTC P1128 – Engine Oil Level Sensor No Signal
DTC P1128 meaning on BMW
DTC P1128 on a BMW indicates a fault with the Engine Oil Level Sensor, specifically that there is no signal being received from the sensor. The Engine Oil Level Sensor is responsible for monitoring the oil level in the engine and sending this information to the vehicle’s computer system.
BMW DTC P1128 symptoms
Symptoms of DTC P1128 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Inaccurate or fluctuating oil level readings on the instrument cluster
- Engine performance issues due to incorrect oil level information
BMW DTC P1128 causes
The common causes of DTC P1128 on a BMW include:
- Failed Engine Oil Level Sensor
- Wiring or connection issues related to the sensor
- Software or programming issues within the vehicle’s computer system
BMW DTC P1128 seriousness
While DTC P1128 may not directly affect the drivability of the vehicle, it is important to address this issue promptly to ensure accurate monitoring of the engine oil level. Ignoring this fault could lead to potential engine damage due to incorrect oil level readings.
How to diagnose DTC P1128 on BMW
To diagnose DTC P1128 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and any related codes
- Inspect the wiring and connections to the Engine Oil Level Sensor for any damage or corrosion
- Test the sensor’s functionality using a multimeter to check for proper voltage and resistance
- Verify that the sensor is securely mounted and not contaminated with oil or debris
How to fix DTC P1128 on BMW
To fix DTC P1128 on a BMW, you can try the following solutions:
- Replace the Engine Oil Level Sensor with a new, OEM part
- Repair any damaged wiring or connections leading to the sensor
- Clear the fault code and reset the vehicle’s computer system
How to erase DTC P1128 on BMW
To erase DTC P1128 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s computer system. After addressing the underlying issue causing the fault code, you can reset the Check Engine Light and ensure that the fault does not reoccur.
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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