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P021D

Cylinder 10 Injection Timing

Generic injection timing fault on cylinder 10.

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

Common causes

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

  • Injector response driftedCommon

Parts involved

  • Injector Cyl10

P021D 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.