P28BB

Cylinder 11 Ion Current Sense Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
Possible misfire in cylinder 11

Causes

Open or short circuit in the ion current circuit
Malfunction of the ion current sensor of the 11th cylinder
Wiring Harness Problems
Engine control unit malfunction
Poor contact in circuit connectors

How to Fix

Check the integrity of the ion current circuit of the 11th cylinder
Check the resistance and functionality of the sensor
Inspect connectors and wiring harness for damage
If necessary, replace the ion current sensor
Reset the error and check the system operation

Related codes

P28B9 P28BC P28BD