P021D OBD II Trouble Code Cylinder 10 Injection Timing

How to diagnose, repair, and info on causes of a P021D cylinder number 10 injection timing engine trouble code. Also includes links to relevant forum topics on the code.

Symptoms of P021D OBD II Trouble Code

  • Engine misfire, sag, or stumble
  • General lack of engine performance
  • Distinctive odor of diesel fuel
  • Reduced fuel efficiency

Common Causes of P021D OBD II Trouble Code

  • Defective fuel injection solenoid
  • Open or shorted wiring and/or connectors in fuel injector control circuit
  • Bad fuel injector
  • Engine timing component failure
  • Crankshaft or camshaft position sensor (or circuit) failure

Severity of P021D OBD II Trouble Code

All codes related to the high-pressure fuel injection system should be considered severe and addressed with a degree of urgency.