P28A2
Cylinder 5 Ion Current Sense Circuit Low
P28A2 is an OBD-II diagnostic trouble code meaning: Cylinder 5 Ion Current Sense Circuit Low. Common causes: open or short circuit in the ion current circuit, ion current sensor malfunction. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
- Possible misfire in cylinder 5
Causes
- Open or short circuit in the ion current circuit
- Ion current sensor malfunction
- Problems with the wiring harness or connectors
- Mechanical problems in the cylinder (compression, valves)
- Engine control unit malfunction
How to Fix
- Check the integrity of the ion current circuit
- Inspect connectors and wiring harness for damage
- Check the functionality of the ion current sensor
- Measure compression in cylinder 5
- If necessary, replace the sensor or repair the wiring
Related codes
Error P28A2 by Vehicle Brand
FAQ
What does the P28A2 code mean?
P28A2 is an OBD-II diagnostic trouble code that indicates: Cylinder 5 Ion Current Sense Circuit Low
What causes a P28A2 error code?
The most common causes of P28A2 include: Open or short circuit in the ion current circuit; Ion current sensor malfunction; Problems with the wiring harness or connectors; Mechanical problems in the cylinder (compression, valves).
How do I fix a P28A2 diagnostic trouble code?
To fix P28A2: Check the integrity of the ion current circuit. Inspect connectors and wiring harness for damage. Check the functionality of the ion current sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28A2?
Yes, but get it checked soon
How much does it cost to fix P28A2?
The estimated repair cost for P28A2 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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