OBD Code P0271

Cylinder 4 Injector Circuit High

What’s mean?

OBD2 Code P0271 Definition:
Code P0271 is triggered when the Power Train Control Module (PCM) detects a high voltage in the Fuel Injector #4 Circuit. During normal conditions the PCM turns the Fuel Injectors ON and OFF in the Fuel Injection System.

Symptoms

Possible sumptoms of P0271
– Engine Light ON (or Service Engine Soon Warning Light) – Engine Misfire – Engine Run Rough – Low MPG

Possible Causes

Possible causes of P0271
– Fuel Injector #4 – Faulty or Corroded Fuel Injector #4 Connector – Plugged #4 Fuel Injector – Dirty #4 Fuel Injector

Possible Solutions

– Clean Fuel Injector #4 Connector – Clean Fuel Injector #4 – Replaced Fuel Injector