P28AB
Cylinder 7 Ion Current Sense Circuit High
P28AB is an OBD-II diagnostic trouble code meaning: Cylinder 7 Ion Current Sense Circuit High. Common causes: open or short circuit in the ion current circuit, malfunction of the ion current sensor of the 7th cylinder. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Misfire in cylinder 7
- Increased fuel consumption
- Loss of engine power
- Check Engine Light Illuminates
Causes
- Open or short circuit in the ion current circuit
- Malfunction of the ion current sensor of the 7th cylinder
- Problem with spark plug in cylinder 7
- Low compression in cylinder 7
- Engine control module malfunction
How to Fix
- Check the integrity of the wiring to the ion current sensor of the 7th cylinder
- Test the resistance of the ion current sensor
- Check the condition of the spark plug in cylinder 7
- Measure compression in cylinder 7
- If necessary, replace the ion current sensor
Related codes
Error P28AB by Vehicle Brand
FAQ
What does the P28AB code mean?
P28AB is an OBD-II diagnostic trouble code that indicates: Cylinder 7 Ion Current Sense Circuit High
What causes a P28AB error code?
The most common causes of P28AB include: Open or short circuit in the ion current circuit; Malfunction of the ion current sensor of the 7th cylinder; Problem with spark plug in cylinder 7; Low compression in cylinder 7.
How do I fix a P28AB diagnostic trouble code?
To fix P28AB: Check the integrity of the wiring to the ion current sensor of the 7th cylinder. Test the resistance of the ion current sensor. Check the condition of the spark plug in cylinder 7. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28AB?
Yes, but get it checked soon
How much does it cost to fix P28AB?
The estimated repair cost for P28AB is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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