P28AF

Cylinder 8 Ion Current Sense Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Check Engine Light Illuminates
Reduced engine power
Misfire in cylinder 8

Causes

Open or short circuit in the sensor circuit
Circuit Grounding Problems
Spark plug fault
Wiring harness damage
Engine control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Check the condition of the spark plug
Inspect the wiring harness for damage
Check circuit grounding
Scan the control unit for errors

Related codes

P28A0 P28A1 P28AE