P214F – BMW DTC

BMW DTC P214F – Reductant Heater ‘A’ Current Too High

DTC P214F meaning on BMW

DTC P214F on a BMW indicates that the reductant heater ‘A’ current is too high. The reductant heater is a component of the Selective Catalytic Reduction (SCR) system, which helps reduce harmful emissions by converting nitrogen oxides into nitrogen and water vapor. The reductant heater is responsible for heating the diesel exhaust fluid (DEF) to optimize its performance in the SCR system.

BMW DTC P214F symptoms

Symptoms of DTC P214F on a BMW may include:

• Check Engine Light illuminated
• Reduced engine performance
• Increased fuel consumption
• Failed emissions test

BMW DTC P214F causes

Common causes of DTC P214F on a BMW include:

• Faulty reductant heater ‘A’
• Short circuit or open circuit in the reductant heater circuit
• Defective SCR system components
• Software issues

BMW DTC P214F seriousness

DTC P214F should not be ignored as it can lead to increased emissions and potential damage to the SCR system. Continuing to drive with this fault may result in reduced fuel efficiency and could potentially harm the environment.

How to diagnose DTC P214F on BMW

To diagnose DTC P214F 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 reductant heater ‘A’ and its wiring for any visible damage
3. Test the reductant heater for proper resistance and continuity
4. Check the SCR system components for any faults

How to fix DTC P214F on BMW

To fix DTC P214F on a BMW, the following steps may be taken:

1. Replace the faulty reductant heater ‘A’
2. Repair any short circuits or open circuits in the reductant heater circuit
3. Address any defects in the SCR system components
4. Update the vehicle’s software if necessary

How to erase DTC P214F on BMW

To erase DTC P214F on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been completed, the code can be cleared to reset the Check Engine Light and ensure that the issue has been resolved.

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.