P2890
Cylinder 1 Ion Current Sense Circuit
P2890 is an OBD-II diagnostic trouble code meaning: Cylinder 1 Ion Current Sense Circuit. Common causes: open or short circuit in the sensor circuit, ion current sensor malfunction. Estimated repair cost: $17–56.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Check Engine Light Illuminates
- Problems starting the engine
- Reduced engine power
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 the spark plugs of the first cylinder
- Check circuit parameters using an oscilloscope
- If necessary, replace the sensor or repair the wiring
Related codes
Error P2890 by Vehicle Brand
FAQ
What does the P2890 code mean?
P2890 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 Ion Current Sense Circuit
What causes a P2890 error code?
The most common causes of P2890 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 P2890 diagnostic trouble code?
To fix P2890: Check the integrity of wiring and connectors. Check the resistance of the ion current sensor. Inspect the spark plugs of the first cylinder. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2890?
Yes, but get it checked soon
How much does it cost to fix P2890?
The estimated repair cost for P2890 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat