ERROR 2 - O2 Sensor Damaged/Missing

Possible causes:

• Depleted oxygen sensor
• Disconnected sensor cable
• Last measured gas with 0% O2 is still inside the measuring path, eg. Argon, Nitrogen or Helium
• Other electronics failure

Step-by-step troubleshooting:

• Check date of manufacture of the oxygen sensor, if is the sensor older than  24 months consider replacing it.
• Check for green oxidation on cables - sign of oxygen sensor leakage, replace both sensor and the cable (#1035).
• If your last measured mixture was strongly hypoxic (close to 0% O2) flush the Analyzer with air, if necesary turn it off and back on.
• Test with known good sensor if available

When to contact service: Return analyzer for service if ERROR 2 persists even with new or known good sensor.