P0274 – BMW DTC

BMW DTC P0274 – Cylinder 5 Injector ‘A’ Circuit High

DTC P0274 meaning on BMW

The Diagnostic Trouble Code (DTC) P0274 for BMW indicates an issue with the Cylinder 5 Injector ‘A’ Circuit registering a high voltage condition. This means that the Engine Control Module (ECM) has detected that the voltage in the circuit for the fuel injector of cylinder 5 is higher than the specified range.

BMW DTC P0274 symptoms

Symptoms associated with DTC P0274 on a BMW may include:

• Engine misfires
• Rough idling
• Decreased fuel efficiency
• Check Engine Light (CEL) illuminated on the dashboard

BMW DTC P0274 causes

The potential causes of DTC P0274 on a BMW can include:

• Faulty fuel injector for cylinder 5
• Wiring or connector issues in the injector circuit
• ECM software or hardware problems
• Injector driver circuit problems

BMW DTC P0274 seriousness

Ignoring DTC P0274 on a BMW can lead to poor engine performance, reduced fuel efficiency, and potential long-term damage to the engine. It is important to address this issue promptly to prevent further complications.

How to diagnose DTC P0274 on BMW

To diagnose DTC P0274 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes and confirm P0274.
2. Inspect the wiring and connectors related to the fuel injector of cylinder 5 for any visible damage or corrosion.
3. Test the fuel injector resistance and operation to determine if it is functioning correctly.
4. Check the ECM for any software updates or malfunctions that may be causing the high voltage condition.

How to fix DTC P0274 on BMW

To fix DTC P0274 on a BMW, you can consider the following actions:

1. Replace the faulty fuel injector for cylinder 5 if it is determined to be the cause of the high voltage condition.
2. Repair or replace any damaged wiring or connectors in the injector circuit.
3. Address any ECM issues by updating the software or replacing the module if necessary.
4. Clear the fault codes after the repairs have been completed.

How to erase DTC P0274 on BMW

To erase DTC P0274 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM memory. After completing the necessary repairs and ensuring that the issue has been resolved, you can proceed to erase the DTC P0274 code to reset the system and turn off the Check Engine Light.

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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