P205C – BMW DTC

BMW DTC P205C – Reductant Tank Temperature Sensor ‘A’ Circuit low

DTC P205C meaning on BMW

DTC P205C indicates a low circuit condition in the Reductant Tank Temperature Sensor ‘A’ for BMW vehicles. The Engine Control Module (ECM) monitors the sensor’s signal to ensure proper operation of the reductant system.

BMW DTC P205C symptoms

Symptoms of DTC P205C on a BMW may include:

• Check Engine Light illuminated
• Reduced engine performance
• Potential for increased emissions

BMW DTC P205C causes

Common causes of DTC P205C on BMW vehicles include:

• Defective Reductant Tank Temperature Sensor ‘A’
• Wiring or connector issues in the sensor circuit
• ECM software or hardware problems

BMW DTC P205C seriousness

While DTC P205C may not cause immediate drivability issues, it can lead to increased emissions and potential long-term engine problems if left unresolved. It is recommended to address this issue promptly.

How to diagnose DTC P205C on BMW

To diagnose DTC P205C on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes.
2. Inspect the Reductant Tank Temperature Sensor ‘A’ and its wiring for any visible damage.
3. Check the sensor’s resistance and compare it to specifications.
4. Test the sensor’s voltage signal with a multimeter.
5. Verify the ECM’s functionality by checking for any related software updates or performing a reset.

How to fix DTC P205C on BMW

To fix DTC P205C on a BMW, consider the following steps:

1. Replace the Reductant Tank Temperature Sensor ‘A’ if it is found to be faulty.
2. Repair any damaged wiring or connectors in the sensor circuit.
3. If the issue persists, consult a professional mechanic for further diagnosis and potential ECM reprogramming.

How to erase DTC P205C on BMW

To erase DTC P205C on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes.
2. After addressing the underlying issue, perform a drive cycle to ensure the fault does not return.

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.