Skip to content
Book on WhatsApp

P0667

Control Module Internal Temperature Sensor A Range or Performance

Same as P0666 with the signal in plausible range yet not matching the engine bay environment.

  • Check engine light: Yes
  • Emissions related: No
  • Repair difficulty: hard

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.

  • Sensor element driftedCommon

Parts involved

  • ECU Internal Temperature Sensor A

P0667 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.