P28B3
Cylinder 9 Ion Current Sense Circuit High
P28B3 is an OBD-II diagnostic trouble code meaning: Cylinder 9 Ion Current Sense Circuit High. Common causes: open or short circuit in the sensor circuit, ion current sensor malfunction. Estimated repair cost: $17–56.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Reduced engine power
- Check Engine Light Illuminates
- Possible misfires
Causes
- Open or short circuit in the sensor circuit
- Ion current sensor malfunction
- Wiring Harness Problems
- Engine control module malfunction
- Corrosion of contacts or connectors
How to Fix
- Check the integrity of the sensor circuit
- Inspect connectors and contacts for corrosion
- Check the resistance of the ion current sensor
- If necessary, replace the sensor or repair the wiring
- Reset the code and check if the error is returned
Related codes
Error P28B3 by Vehicle Brand
FAQ
What does the P28B3 code mean?
P28B3 is an OBD-II diagnostic trouble code that indicates: Cylinder 9 Ion Current Sense Circuit High
What causes a P28B3 error code?
The most common causes of P28B3 include: Open or short circuit in the sensor circuit; Ion current sensor malfunction; Wiring Harness Problems; Engine control module malfunction.
How do I fix a P28B3 diagnostic trouble code?
To fix P28B3: Check the integrity of the sensor circuit. Inspect connectors and contacts for corrosion. Check the resistance of the ion current sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28B3?
Yes, but get it checked soon
How much does it cost to fix P28B3?
The estimated repair cost for P28B3 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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