P24E5 – BMW DTC

BMW DTC P24E5 – NH3 Sensor Circuit Intermittent/Erratic

DTC P24E5 meaning on BMW

DTC P24E5 on a BMW refers to a fault with the NH3 (ammonia) sensor circuit that is intermittent or erratic. 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 P24E5 symptoms

Symptoms of DTC P24E5 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Reduced engine performance
• Increased fuel consumption
• Unusual exhaust odor

BMW DTC P24E5 causes

Common causes of DTC P24E5 on a BMW include:

• Wiring or connector issues in the NH3 sensor circuit
• Faulty NH3 sensor
• Software glitches in the engine control module (ECM)

BMW DTC P24E5 seriousness

While DTC P24E5 may not cause immediate drivability issues, it is important to address this fault promptly to prevent potential damage to the vehicle’s emissions system and ensure optimal engine performance.

How to diagnose DTC P24E5 on BMW

To diagnose DTC P24E5 on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the NH3 sensor wiring and connectors for any damage or corrosion
3. Test the NH3 sensor using a multimeter to check for proper resistance values
4. Check for any software updates available for the ECM

How to fix DTC P24E5 on BMW

To fix DTC P24E5 on a BMW, the following steps may be taken:

1. Repair or replace any damaged wiring or connectors in the NH3 sensor circuit
2. Replace the NH3 sensor if it is found to be faulty
3. Update the ECM software to the latest version

How to erase DTC P24E5 on BMW

After addressing the underlying issue causing DTC P24E5 on a BMW, the fault code can be erased using a diagnostic scanner. This will reset the Check Engine Light and clear the code from the vehicle’s memory.

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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