P0271

Cylinder 4 Injector A Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Misfire in cylinder 4
Unstable engine operation
Power reduction
Increased fuel consumption

Causes

Broken or damaged injector wiring harness
Cylinder 4 injector malfunction
Corrosion of contacts in connectors
Problems with injector power supply
Faulty injector driver in ECU

How to Fix

Check the resistance of the injector of cylinder 4
Inspect the wiring harness for damage
Check the contacts in the injector and ECU connectors
Check injector power supply
If necessary, replace the injector or wiring harness

Related codes

P0204 P0267 P0264 P0304