P21D4

Cylinder 6 Injector B Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Unstable engine operation
Misfire in cylinder 6
Power Loss
Increased fuel consumption
Check Engine Light Is On

Causes

Cylinder 6 injector malfunction
Broken or damaged injector wires
Poor contact in the injector connector
Control module malfunction
Short circuit in the circuit

How to Fix

Check injector resistance
Inspect wiring and connectors for damage
Check the presence of a control signal from the ECU
Replace the injector if necessary
Clear contacts and restore connections

Related codes

P0206 P021D3 P0266