P289E
Cylinder 4 Ion Current Sense Circuit Low
P289E is an OBD-II diagnostic trouble code meaning: Cylinder 4 Ion Current Sense Circuit Low. Common causes: open or short circuit in the ion current circuit, malfunction of the ion current sensor of the 4th cylinder. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Reduced engine power
- Check Engine Light Illuminates
- Possible misfire in cylinder 4
Causes
- Open or short circuit in the ion current circuit
- Malfunction of the ion current sensor of the 4th cylinder
- Problems with the wiring harness or connectors
- Engine control unit malfunction
- Poor contact in the sensor circuit
How to Fix
- Check the integrity of the ion current circuit of the 4th cylinder
- Inspect connectors and wiring harness for damage
- Check the resistance of the ion current sensor
- If necessary, replace the ion current sensor
- Check and, if necessary, reflash the engine control unit
Related codes
Error P289E by Vehicle Brand
FAQ
What does the P289E code mean?
P289E is an OBD-II diagnostic trouble code that indicates: Cylinder 4 Ion Current Sense Circuit Low
What causes a P289E error code?
The most common causes of P289E include: Open or short circuit in the ion current circuit; Malfunction of the ion current sensor of the 4th cylinder; Problems with the wiring harness or connectors; Engine control unit malfunction.
How do I fix a P289E diagnostic trouble code?
To fix P289E: Check the integrity of the ion current circuit of the 4th cylinder. Inspect connectors and wiring harness for damage. Check the resistance of the ion current sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P289E?
Yes, but get it checked soon
How much does it cost to fix P289E?
The estimated repair cost for P289E is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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