P21E5

Cylinder 5 Injector B Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

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

Causes

Short circuit in the injector circuit
Cylinder 5 injector malfunction
Wiring harness damage
Problems with the engine control unit
Oxidation of contacts in connectors

How to Fix

Check the resistance of the injector of cylinder 5
Inspect the wiring harness and connectors for damage.
Check the voltage in the injector circuit
Replace the injector if necessary
Flash or replace the ECU if it is faulty

Related codes

P21E4 P21E6 P0205