P28BF

Cylinder 12 Ion Current Sense Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

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

Causes

Ion current sensor malfunction
Open or short circuit in wiring
Problems with the engine control module
Poor contact in connectors
Mechanical problems in the cylinder

How to Fix

Check the integrity of wiring and connectors
Check the resistance of the ion current sensor
Check the operation of the control module
Replace sensor if necessary
Check the mechanical condition of the cylinder

Related codes

P28B0 P28B1 P28B2