Possible causes

– Dirty Fuel Injector 8
– Faulty Fuel Injector 8
– Plugged Fuel Injector 8
– Fuel injector 8 harness is open or shorted
– Fuel injector 8 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

P0284 Description

Code P0284 is triggered when the Engine Control Module (ECM) detects that the acceleration rate of the crankshaft for Cylinder 8 was less than a calibrated amount. During normal conditions the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.

P0284 Information for specific makes

P0284 FORD
P0284 AUDI
P0284 VOLKSWAGEN