Cylinder 4 Fuel Injector Circuit High
Table of contents
P0271 MINI Possible Causes
- 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
How do I fix code P0271 MINI?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.
Cost of diagnosing the P0271 MINI code
The cost of diagnosing the P0271 MINI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine Misfire
- Engine Run Rough
- Low MPG
P0271 MINI Description
This fault code is stored in the Engine Control Module (ECM) when the injector control circuit does not behave as expected. The ECM uses the induced voltage from the injector to indicate that the fuel injector circuit is operating correctly electrically. It does not signal the mechanical condition of the injector. When the ECM opens the ground circuit for an injector, to cease current flow, a voltage is induced into the winding. This voltage shows the electrical integrity of the injector and associated wiring. Absence of this induced voltage results in a fault code being stored in the ECM.