P289F
Cylinder 4 Ion Current Sense Circuit High
P289F is an OBD-II diagnostic trouble code meaning: Cylinder 4 Ion Current Sense Circuit High. Common causes: open or short circuit in the ion current circuit, faulty spark plug. Estimated repair cost: $17–56.
Symptoms
- Unstable engine operation
- Misfire in cylinder 4
- Increased fuel consumption
- Reduced engine power
- Check Engine Light Illuminates
Causes
- Open or short circuit in the ion current circuit
- Faulty spark plug
- 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 of the 4th cylinder
- Check the condition of the wiring harness
- Test circuit resistance
- If necessary, replace faulty components
Related codes
Error P289F by Vehicle Brand
FAQ
What does the P289F code mean?
P289F is an OBD-II diagnostic trouble code that indicates: Cylinder 4 Ion Current Sense Circuit High
What causes a P289F error code?
The most common causes of P289F include: Open or short circuit in the ion current circuit; Faulty spark plug; Wiring harness damage; Problems with the engine control unit.
How do I fix a P289F diagnostic trouble code?
To fix P289F: Check the integrity of the ion current circuit. Inspect the spark plug of the 4th cylinder. Check the condition of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P289F?
Yes, but get it checked soon
How much does it cost to fix P289F?
The estimated repair cost for P289F is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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