P0208 — Cylinder 8 Injector A Circuit

P0208: Cylinder 8 Injector A Circuit — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Cylinder 8 Injector A Circuit. Basic catalogue definition; diagnostic details have not yet been reviewed.

Affected system: Powertrain

Symptoms

  • Check-engine lamp, rough idle or engine misfire; reduced power may occur.
  • An electrical problem is detected in the injector circuit for cylinder 8; this does not by itself prove a clogged nozzle.

Possible causes

  • Loose, corroded or broken connector and wiring at injector 8.
  • Injector coil/actuator fault; an engine-control driver fault is possible but must be proved separately.

What to check

  • Read P0208 with related misfire and supply-voltage faults before clearing memory.
  • Identify cylinder 8 using the manufacturer's numbering scheme, then inspect its injector connector and loom.
  • Perform an OEM-specified power, circuit continuity and driver-control test with ignition and high-pressure fuel safety precautions.
  • Compare injector electrical test results with the manufacturer’s data, without applying a universal resistance limit.
  • Repair wiring or replace the injector only when confirmed, then recheck code and cylinder contribution.

Also written as: P0208-00, P020800, PO208 (some scan tools add the fault-type byte, e.g. -00).