P0140/P0146/P0160/P0166 O2 Sensor Circuit No Activity Detected

  • Make sure the iO2SS is properly powered. Measure the unit's power input (red wire) when the engine is on; you should measure >12V.
  • Ensure the iO2SS's signal outputs (green wires) are connected to the appropriate oxygen sensor signal wires leading to the PCM.
  • Verify all other wiring and check all solder joints or crimp connectors for loose connections, frayed wires, or corrosion.
  • If using an iO2SS in piggy-back mode, your oxygen sensor may be damaged. Consider using the iO2SS in stand-alone mode instead.
  • Contact support@symtechlabs.com for further support.

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io2ss/p0140.txt · Last modified: 2013/01/10 19:55 by symtechlabs
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