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P2397

Diesel Intake Air Flow B Position Sensor Range or Performance

Same as P2396 with the signal in plausible range yet not matching the actuator command.

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

Common causes

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

  • Sensor signal offsetCommon

Parts involved

  • Diesel Intake Air Flow B Position Sensor

P2397 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.