P28B8

Cylinder 11 Ion Current Sense Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Reduced engine power
Check Engine light comes on
Possible misfires

Causes

Open or short circuit in the circuit
Spark plug fault
Wiring harness damage
Problems with the engine control unit
Contact corrosion

How to Fix

Check the integrity of the ion current circuit
Inspect the spark plug and replace if necessary
Check the condition of the wiring harness
Check contacts and connections
If necessary, replace the engine control unit

Related codes

P28B7 P28B9 P28BA