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P2065

Fuel Level Sensor B Circuit

A general electrical fault is reported on the secondary fuel-level sensor (B) — vehicles with saddle tanks or auxiliary tanks use a second sender to cover the full tank volume.

  • Check engine light: Not always
  • Emissions related: No
  • Repair difficulty: hard

Common causes

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

  • Sender failed — float, swing arm, or rheostatCommon
  • Harness or connector faultPossible

Parts involved

  • Fuel Level Sensor B
  • Fuel Tank

P2065 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.