P0253 – BMW DTC

BMW DTC P0253 – Injection Pump Fuel Metering Control ‘A’ Low (Cam/Rotor/Injector)

DTC P0253 meaning on BMW

The Diagnostic Trouble Code (DTC) P0253 for BMW refers to ¨Injection Pump Fuel Metering Control ‘A’ Low (Cam/Rotor/Injector).¨ This code indicates that the fuel injection pump is not providing the expected amount of fuel to the engine’s injectors due to a low signal from the fuel metering control system.

BMW DTC P0253 symptoms

Symptoms of DTC P0253 on a BMW may include:

• Engine misfires or rough idling
• Decreased engine performance
• Reduced fuel efficiency
• Check Engine Light (CEL) illuminated on the dashboard

BMW DTC P0253 causes

The common causes of DTC P0253 on a BMW include:

• Faulty fuel injection pump
• Defective fuel metering control system
• Wiring issues or poor electrical connections
• Low fuel pressure

BMW DTC P0253 seriousness

Ignoring DTC P0253 on a BMW can lead to potential engine performance issues, reduced fuel efficiency, and possible damage to engine components over time. It is recommended to address this code promptly to prevent further complications.

How to diagnose DTC P0253 on BMW

To diagnose DTC P0253 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s Engine Control Module (ECM).
2. Inspect the fuel injection pump and related components for any visible damage or signs of wear.
3. Check the fuel pressure to ensure it meets the manufacturer’s specifications.
4. Test the fuel metering control system for proper operation.

How to fix DTC P0253 on BMW

To fix DTC P0253 on a BMW, the following steps may be taken:

1. Replace the faulty fuel injection pump if it is determined to be the cause of the issue.
2. Repair or replace any damaged wiring or connectors in the fuel metering control system.
3. Address any issues with low fuel pressure by checking the fuel filter, fuel lines, and fuel pump.
4. Clear the fault codes using a diagnostic scanner after the repairs have been completed.

How to erase DTC P0253 on BMW

To erase DTC P0253 on a BMW, follow these steps:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port.
2. Select the option to clear fault codes from the ECM.
3. Confirm the action and wait for the scanner to erase the DTC P0253 code.
4. Once the code has been cleared, start the engine to ensure the Check Engine Light is no longer illuminated.

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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