BMW DTC P24E3 – NH3 Sensor Circuit Low
DTC P24E3 meaning on BMW
The DTC P24E3 code on a BMW indicates a low circuit condition in the NH3 (ammonia) sensor. This sensor is responsible for monitoring the level of ammonia in the exhaust system, which is crucial for the operation of the selective catalytic reduction (SCR) system.
BMW DTC P24E3 symptoms
Symptoms of a DTC P24E3 code on a BMW may include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light on the dashboard. In some cases, the vehicle may go into a reduced power mode to prevent further damage.
BMW DTC P24E3 causes
The low circuit condition in the NH3 sensor that triggers the DTC P24E3 code on a BMW can be caused by various factors. Common causes include wiring issues, a faulty NH3 sensor, a malfunctioning SCR system, or a problem with the engine control module (ECM).
BMW DTC P24E3 seriousness
Ignoring a DTC P24E3 code on a BMW can lead to increased emissions, potential damage to the catalytic converter, and reduced overall engine performance. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P24E3 on BMW
To diagnose a DTC P24E3 code on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the specific fault code. They would then inspect the NH3 sensor and its wiring for any visible damage or corrosion. Testing the sensor’s resistance and checking for proper voltage supply are also common diagnostic steps.
How to fix DTC P24E3 on BMW
Fixing a DTC P24E3 code on a BMW often involves repairing or replacing the NH3 sensor, addressing any wiring issues, or recalibrating the SCR system. It is recommended to follow the manufacturer’s diagnostic and repair procedures to ensure a proper fix and prevent future occurrences of the code.
How to erase DTC P24E3 on BMW
Once the underlying issue causing the DTC P24E3 code on a BMW has been resolved, the code can be cleared using a diagnostic scanner. By accessing the vehicle’s ECM and selecting the option to clear fault codes, the DTC P24E3 code should be successfully erased from the system.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.