BMW DTC P24EB – NH3 Sensor Supply Voltage Circuit Low
DTC P24EB meaning on BMW
The DTC P24EB on a BMW indicates an issue with the NH3 (ammonia) sensor supply voltage circuit being too low. The NH3 sensor is a crucial component in the vehicle’s emissions control system, responsible for monitoring the level of ammonia in the exhaust gases.
BMW DTC P24EB symptoms
Symptoms of the DTC P24EB on a BMW may include:
- Check Engine Light (MIL) illuminated
- Reduced engine performance
- Increased fuel consumption
- Possible ammonia smell from the exhaust
BMW DTC P24EB causes
Common causes of the DTC P24EB on a BMW include:
- Faulty NH3 sensor
- Wiring or connector issues in the NH3 sensor circuit
- Low voltage supply to the NH3 sensor
BMW DTC P24EB seriousness
The DTC P24EB should not be ignored as it can lead to increased emissions, reduced fuel efficiency, and potential damage to the vehicle’s emissions control system. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P24EB on BMW
To diagnose the DTC P24EB on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the NH3 sensor and its wiring for any visible damage
- Check the voltage supply to the NH3 sensor
- Perform a sensor test to determine if the NH3 sensor is functioning correctly
How to fix DTC P24EB on BMW
To fix the DTC P24EB on a BMW, the following steps may be taken:
- Replace the faulty NH3 sensor if necessary
- Repair any damaged wiring or connectors in the NH3 sensor circuit
- Ensure proper voltage supply to the NH3 sensor
- Clear the fault codes and perform a test drive to verify the repair
How to erase DTC P24EB on BMW
To erase the DTC P24EB on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the vehicle’s ECU. Once the codes are cleared, 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 the 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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