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P2E79

Hybrid/EV Electronics Coolant Pump C Performance

Hybrid/EV electronics coolant pump C does not produce the expected flow. Pump aging or air pocket in loop.

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

Common causes

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

  • Pump output degradedCommon
  • Coolant level lowPossible

Parts involved

  • Hybrid Electronics Coolant Pump C

P2E79 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.