P21E2

Cylinder 4 Injector B Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–67 (est.)

Symptoms

Unstable engine operation
Misfire in cylinder 4
Increased fuel consumption
Check Engine Light Illuminates
Reduced engine power

Causes

Cylinder 4 injector malfunction
Open or short circuit in wiring harness
Poor contact in the injector connector
Malfunction of the control module (ECU)
Contact corrosion

How to Fix

Check the resistance of the injector of cylinder 4
Inspect the wiring harness and connectors for damage.
Check the voltage in the injector circuit
If necessary, replace the injector
Clean contacts from corrosion

Related codes

P21E1 P21E3 P0204