P2B03

Cylinder 4 Injection Pulse Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Misfire in cylinder 4
Reduced engine power
Increased fuel consumption
Check Engine light comes on

Causes

Malfunction of the fuel injector of the 4th cylinder
Problems with the injector electrical circuit
ECU malfunction
Fuel system contamination
Low fuel pressure

How to Fix

Check the condition of the fuel injector of the 4th cylinder
Check the electrical circuit of the injector for opens and shorts
Check fuel pressure
Clean the fuel system if necessary
Replace the faulty injector or ECU

Related codes

P2B04 P2B02 P2B01