P28B8
Cylinder 11 Ion Current Sense Circuit
P28B8 is an OBD-II diagnostic trouble code meaning: Cylinder 11 Ion Current Sense Circuit. Common causes: open or short circuit in the circuit, spark plug fault. Estimated repair cost: $6–56.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Reduced engine power
- Check Engine light comes on
- Possible misfires
Causes
- Open or short circuit in the circuit
- Spark plug fault
- 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 and replace if necessary
- Check the condition of the wiring harness
- Check contacts and connections
- If necessary, replace the engine control unit
Related codes
Error P28B8 by Vehicle Brand
FAQ
What does the P28B8 code mean?
P28B8 is an OBD-II diagnostic trouble code that indicates: Cylinder 11 Ion Current Sense Circuit
What causes a P28B8 error code?
The most common causes of P28B8 include: Open or short circuit in the circuit; Spark plug fault; Wiring harness damage; Problems with the engine control unit.
How do I fix a P28B8 diagnostic trouble code?
To fix P28B8: Check the integrity of the ion current circuit. Inspect the spark plug and replace if necessary. Check the condition of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28B8?
Yes, but get it checked soon
How much does it cost to fix P28B8?
The estimated repair cost for P28B8 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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