BMW DTC P24E6 – NH3 Sensor Heater Circuit/Open
DTC P24E6 meaning on BMW
DTC P24E6 on a BMW refers to a fault with the NH3 (ammonia) sensor heater circuit. The NH3 sensor is a crucial component in the Selective Catalytic Reduction (SCR) system, which helps reduce harmful emissions by converting nitrogen oxides into harmless nitrogen and water vapor.
BMW DTC P24E6 symptoms
Symptoms of a DTC P24E6 on a BMW may include the illumination of the check engine light, reduced engine performance, increased fuel consumption, and potential emission of higher levels of nitrogen oxides.
BMW DTC P24E6 causes
The most common causes of a DTC P24E6 on a BMW include a faulty NH3 sensor, damaged wiring or connectors in the NH3 sensor circuit, or a malfunctioning NH3 sensor heater.
BMW DTC P24E6 seriousness
Ignoring a DTC P24E6 on a BMW can lead to increased emissions, potential damage to the catalytic converter, and may result in the vehicle failing emissions tests. It is important to address this issue promptly to ensure optimal engine performance and environmental compliance.
How to diagnose DTC P24E6 on BMW
To diagnose a DTC P24E6 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and perform a thorough inspection of the NH3 sensor, wiring, and connectors. Testing the NH3 sensor heater circuit for continuity and proper voltage supply is essential to pinpoint the root cause of the issue.
How to fix DTC P24E6 on BMW
Fixing a DTC P24E6 on a BMW may involve replacing the NH3 sensor if it is found to be faulty, repairing any damaged wiring or connectors in the NH3 sensor circuit, or replacing the NH3 sensor heater if it is malfunctioning. It is recommended to follow the manufacturer’s repair procedures and use genuine BMW parts for optimal performance.
How to erase DTC P24E6 on BMW
After fixing the underlying issue causing the DTC P24E6 on a BMW, the fault code can be erased using a diagnostic scanner. By clearing the code, the check engine light should turn off, indicating that the problem has been resolved. It is important to ensure that the repair has been successful before clearing the fault code.
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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