BMW DTC P24CE – Reductant Tank Cap Switch Circuit High
DTC P24CE meaning on BMW
DTC P24CE on a BMW indicates an issue with the Reductant Tank Cap Switch Circuit being detected as high. The reductant tank cap switch is a sensor that monitors the status of the reductant tank cap, which is a crucial component of the Selective Catalytic Reduction (SCR) system in diesel vehicles.
BMW DTC P24CE symptoms
Symptoms of DTC P24CE on a BMW may include the Check Engine Light being illuminated on the dashboard, reduced engine performance, decreased fuel efficiency, and potential issues with the SCR system.
BMW DTC P24CE causes
The causes of DTC P24CE on a BMW can vary, but common reasons include a faulty reductant tank cap switch, damaged wiring or connectors in the circuit, or issues with the SCR system itself.
BMW DTC P24CE seriousness
While DTC P24CE may not cause immediate drivability issues, it is important to address this fault promptly to prevent potential damage to the SCR system and ensure compliance with emissions regulations.
How to diagnose DTC P24CE on BMW
To diagnose DTC P24CE on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and perform a visual inspection of the reductant tank cap switch, wiring, and connectors. Testing the switch for proper operation and checking the SCR system for any related faults may also be necessary.
How to fix DTC P24CE on BMW
Fixing DTC P24CE on a BMW may involve replacing the reductant tank cap switch if it is found to be faulty. Additionally, repairing any damaged wiring or connectors in the circuit and addressing any underlying issues with the SCR system can help resolve the fault code.
How to erase DTC P24CE on BMW
Once the underlying issue causing DTC P24CE on a BMW has been fixed, the fault code can be cleared using a diagnostic scanner. This will reset the Check Engine Light and allow the vehicle’s onboard computer to monitor the system for any new faults.
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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