Possible causes

– Dirty Fuel Injector 5
– Faulty Fuel Injector 5
– Plugged Fuel Injector 5
– Fuel injector 5 harness is open or shorted
– Fuel injector 5 circuit poor electrical connection

Tech notes

Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Engine Misfire
– Engine Run Rough
– Low MPG

P0273 BMW Description

Code P0273 is triggered when the Engine Control Module (ECM) detects a low voltage in the Fuel Injector 5 Circuit. During normal conditions the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.