BMW DTC P24DB – Reductant Purge Control Valve ‘B’ Circuit /Open
DTC P24DB meaning on BMW
DTC P24DB on a BMW indicates a fault with the Reductant Purge Control Valve ‘B’ circuit being open. The reductant purge control valve is responsible for controlling the flow of the reductant (such as DEF – Diesel Exhaust Fluid) into the exhaust system to reduce emissions.
BMW DTC P24DB symptoms
Symptoms of DTC P24DB on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Increased fuel consumption
- Possible exhaust odor
BMW DTC P24DB causes
Common causes of DTC P24DB on a BMW include:
- Faulty Reductant Purge Control Valve ‘B’
- Open or short circuit in the wiring related to the control valve
- Corrosion or poor connections in the control valve circuit
BMW DTC P24DB seriousness
DTC P24DB should not be ignored as it can lead to increased emissions and potential engine performance issues. While the vehicle may still be operable, it is recommended to address the issue promptly to prevent further damage.
How to diagnose DTC P24DB on BMW
To diagnose DTC P24DB on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the Reductant Purge Control Valve ‘B’ and associated wiring for any visible damage or corrosion
- Test the control valve for proper operation using a multimeter
- Check for any other related faults in the reductant system
How to fix DTC P24DB on BMW
To fix DTC P24DB on a BMW, the following steps may be taken:
- Replace the faulty Reductant Purge Control Valve ‘B’
- Repair any open or short circuits in the wiring related to the control valve
- Clean or repair any corroded connections in the control valve circuit
- Clear the fault code and perform a test drive to ensure the issue is resolved
How to erase DTC P24DB on BMW
To erase DTC P24DB on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been completed and the issue resolved, the code can be cleared to reset the Check Engine Light and ensure the system is functioning 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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