OBD Codes List

Diagnostic reference · P020B

P020B

Cylinder 2 Injection Timing

System
Injector circuits (P code)
Lamp
Check Engine Light
Category
Powertrain - Fuel/Air Metering

What it means

P020B means Cylinder 2 Injection Timing.

Check these first

  • A faulty fuel injector on cylinder 2
  • A clogged injector on cylinder 2
  • A worn spark plug on cylinder 2
  • Low fuel pressure at the rail
  • A short or open in the cylinder 2 injector wiring

What to do next

  1. Compare cylinder 2 injection timing on a scan tool
  2. Check the injector balance on cylinder 2
  3. Replace the cylinder 2 spark plug if worn
  4. Check the fuel pressure at the rail
  5. Replace the cylinder 2 injector if it fails the balance test
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.