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P06E6

Sensor Power Supply C Circuit Open

Sensor Power Supply C Circuit Open: the circuit is open. Sensors fed from this rail lose their supply and read invalid.

  • Check engine light: Yes
  • Emissions related: Yes
  • Repair difficulty: medium

Symptoms

  • Check engine light on
  • Possible limp mode or no-start
  • Multiple follow-up faults across modules
  • Reset/relearn may be needed after repair

Common causes

Ordered by how often each turns out to be the cause.

  • Open in supply railCommon
  • Pin pushed back out of connector bodyLess likely
  • Cracked solder joint inside the module or sensorLess likely

Parts involved

  • Sensor Power Supply C

P06E6 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.