P0271 BMW - Fuel Injector Cylinder 4 Activation
- Dirty Fuel Injector 4
- Faulty Fuel Injector 4
- Plugged Fuel Injector 4
- Fuel injector 4 harness is open or shorted
- Fuel injector 4 circuit poor electrical connection
Tech notesClogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine Misfire
- Engine Run Rough
- Low MPG
P0271 Bmw DescriptionCode P0271 is triggered when the Engine Control Module (ECM) detects a high voltage in the Fuel Injector 4 Circuit. During normal conditions, the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.
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