BMW DTC P0699 – Sensor Reference Voltage ‘C’ Circuit High
DTC P0699 meaning on BMW
DTC P0699 on a BMW indicates an issue with the Sensor Reference Voltage ‘C’ Circuit being too high. This fault code is triggered when the Engine Control Module (ECM) detects that the voltage in the sensor reference circuit exceeds the specified limit.
BMW DTC P0699 symptoms
Symptoms of DTC P0699 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Engine running rough or misfiring
- Reduced engine performance
- Vehicle may go into limp mode
BMW DTC P0699 causes
Common causes of DTC P0699 on a BMW include:
- Short circuit in the sensor reference voltage ‘C’ circuit
- Faulty sensor or sensor wiring
- Issues with the ECM
BMW DTC P0699 seriousness
While DTC P0699 may not always result in immediate drivability issues, it is important to address this fault code promptly to prevent potential damage to the engine or other components.
How to diagnose DTC P0699 on BMW
To diagnose DTC P0699 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the sensor reference voltage ‘C’ circuit for any visible damage or shorts
- Test the sensor and wiring for proper voltage and continuity
- Check the ECM for any signs of malfunction
How to fix DTC P0699 on BMW
To fix DTC P0699 on a BMW, the following steps may be taken:
- Repair any damaged wiring or connections in the sensor reference voltage ‘C’ circuit
- Replace the faulty sensor if necessary
- If the ECM is determined to be the issue, it may need to be reprogrammed or replaced
How to erase DTC P0699 on BMW
To erase DTC P0699 on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been made, the code can be reset, and the Check Engine Light should turn off. It is important to ensure that the underlying issue causing the fault code has been addressed before clearing it.
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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