P28A4
Cylinder 6 Ion Current Sense Circuit
P28A4 is an OBD-II diagnostic trouble code meaning: Cylinder 6 Ion Current Sense Circuit. Common causes: open or short circuit in the sensor circuit, ion current sensor malfunction. 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
- Ion current sensor malfunction
- Connector problems or contact corrosion
- Engine control unit malfunction
- Mechanical problems in the cylinder (rare)
How to Fix
- Check the integrity of wiring and connectors
- Check the resistance of the ion current sensor
- Inspect contacts for corrosion
- If necessary, replace the ion current sensor
- Check the operation of the engine control unit
Related codes
Error P28A4 by Vehicle Brand
FAQ
What does the P28A4 code mean?
P28A4 is an OBD-II diagnostic trouble code that indicates: Cylinder 6 Ion Current Sense Circuit
What causes a P28A4 error code?
The most common causes of P28A4 include: Open or short circuit in the sensor circuit; Ion current sensor malfunction; Connector problems or contact corrosion; Engine control unit malfunction.
How do I fix a P28A4 diagnostic trouble code?
To fix P28A4: Check the integrity of wiring and connectors. Check the resistance of the ion current sensor. Inspect contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28A4?
Yes, but get it checked soon
How much does it cost to fix P28A4?
The estimated repair cost for P28A4 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat