P28B2
Cylinder 9 Ion Current Sense Circuit Low
P28B2 is an OBD-II diagnostic trouble code meaning: Cylinder 9 Ion Current Sense Circuit Low. Common causes: open or short circuit in the sensor circuit, malfunction of the cylinder 9 ion current sensor. Estimated repair cost: $28–89.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Check Engine Light Illuminates
- Reduced engine power
- Possible misfires
Causes
- Open or short circuit in the sensor circuit
- Malfunction of the cylinder 9 ion current sensor
- Connector problems or contact corrosion
- Engine control unit malfunction
- Wiring harness damage
How to Fix
- Check the integrity of the sensor circuit
- Inspect connectors and contacts for damage
- Check the resistance of the ion current sensor
- Scan the control unit for other errors
- If necessary, replace the sensor or repair the wiring
Related codes
Error P28B2 by Vehicle Brand
FAQ
What does the P28B2 code mean?
P28B2 is an OBD-II diagnostic trouble code that indicates: Cylinder 9 Ion Current Sense Circuit Low
What causes a P28B2 error code?
The most common causes of P28B2 include: Open or short circuit in the sensor circuit; Malfunction of the cylinder 9 ion current sensor; Connector problems or contact corrosion; Engine control unit malfunction.
How do I fix a P28B2 diagnostic trouble code?
To fix P28B2: Check the integrity of the sensor circuit. Inspect connectors and contacts 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 P28B2?
Yes, but get it checked soon
How much does it cost to fix P28B2?
The estimated repair cost for P28B2 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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