P28AC

Cylinder 8 Ion Current Sense Circuit

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 ion current circuit
Malfunction of the ion current sensor of the 8th cylinder
Damage to the sensor connector
Problems with the engine control unit
Corrosion of contacts in the circuit

How to Fix

Check the integrity of the ion current circuit of the 8th cylinder
Inspect the connectors and contacts of the sensor for damage
Check the functionality of the ion current sensor
If necessary, replace the sensor or repair the wiring
Reset the error code and check if it appears again

Related codes

P28A0 P28A1 P28A2