P21D3

Cylinder 5 Injector B Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Misfire in cylinder 5
Reduced engine power
Increased fuel consumption
Check Engine Light Is On

Causes

Broken wires to the injector of cylinder 5
Malfunction of the injector itself
Problems with the injector connector
Engine control unit malfunction
Short circuit in the injector circuit

How to Fix

Check the integrity of the wires to the injector
Check injector resistance
Inspect the injector connector for oxidation.
Check the power supply and control signal to the injector
If necessary, replace the nozzle or repair the wiring

Related codes

P21D0 P21D1 P21D2