P28BB
Cylinder 11 Ion Current Sense Circuit High
P28BB is an OBD-II diagnostic trouble code meaning: Cylinder 11 Ion Current Sense Circuit High. Common causes: open or short circuit in the ion current circuit, malfunction of the ion current sensor of the 11th cylinder. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
- Possible misfire in cylinder 11
Causes
- Open or short circuit in the ion current circuit
- Malfunction of the ion current sensor of the 11th cylinder
- Wiring Harness Problems
- Engine control unit malfunction
- Poor contact in circuit connectors
How to Fix
- Check the integrity of the ion current circuit of the 11th cylinder
- Check the resistance and functionality of the sensor
- Inspect connectors and wiring harness for damage
- If necessary, replace the ion current sensor
- Reset the error and check the system operation
Related codes
Error P28BB by Vehicle Brand
FAQ
What does the P28BB code mean?
P28BB is an OBD-II diagnostic trouble code that indicates: Cylinder 11 Ion Current Sense Circuit High
What causes a P28BB error code?
The most common causes of P28BB include: Open or short circuit in the ion current circuit; Malfunction of the ion current sensor of the 11th cylinder; Wiring Harness Problems; Engine control unit malfunction.
How do I fix a P28BB diagnostic trouble code?
To fix P28BB: Check the integrity of the ion current circuit of the 11th cylinder. Check the resistance and functionality of the sensor. Inspect connectors and wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28BB?
Yes, but get it checked soon
How much does it cost to fix P28BB?
The estimated repair cost for P28BB is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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