Possible causes
– Dirty Fuel Injector 9
– Faulty Fuel Injector 9
– Plugged Fuel Injector 9
– Fuel injector 9 harness is open or shorted
– Fuel injector 9 circuit poor electrical connection
– Faulty Fuel Injector 9
– Plugged Fuel Injector 9
– Fuel injector 9 harness is open or shorted
– Fuel injector 9 circuit poor electrical connection
Tech description
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
– Engine Misfire
– Engine Run Rough
– Low MPG
P0285 VOLKSWAGEN OBD Code Description
Code P0285 is triggered when the Engine Control Module (ECM) detects a low voltage in the Fuel Injector 9 Circuit. During normal conditions the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.