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P24AF

Particulate Matter Sensor Circuit Range or Performance

Same as P24AE with the signal in plausible range yet not matching the engine model.

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

Common causes

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

  • Sensor element driftedCommon

Parts involved

  • Particulate Matter Sensor

P24AF 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.