P21F1

Cylinder 11 Injector B Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–94 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Misfire in cylinder 11
Check Engine Light Illuminates
Reduced engine power

Causes

Cylinder 11 injector malfunction
Open or short circuit in the injector wiring harness
Poor contact in the injector connector
Problems with the engine control module (ECU)
Short circuit to ground in control circuit

How to Fix

Check the resistance of the injector of cylinder 11
Inspect the wiring harness and connectors for damage
Check injector control circuit for short circuit
If necessary, replace the injector
Test the operation of the system after repair

Related codes

P0201 P021F0 P0261