P21D9

Cylinder 11 Injector B Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Misfire in cylinder 11
Reduced engine power
Unstable engine idling
Increased fuel consumption
Check Engine light comes on

Causes

Broken or damaged injector circuit wires
Cylinder 11 injector malfunction
Problems with the injector connector
Malfunction of the engine control unit (ECU)
Blown fuse or faulty relay

How to Fix

Check the integrity of the injector circuit wires
Check the condition of the injector connector
Check injector resistance
Replace the faulty injector if necessary
Check and replace fuses or relays

Related codes

P21D8 P21DA P020B