Fuel and air

P0206 — Cylinder 6 Fuel Injector Circuit Malfunction

Severity: medium Drive with care, to a shop

What P0206 means

The engine control module fires the cylinder 6 injector by switching its circuit to ground, and it monitors that circuit for correct current and voltage. P0206 sets when the circuit behaves abnormally, such as an open, a short or incorrect resistance. The cause is most often the injector, its connector or the wiring, and less often the module's driver.

Symptoms

  • Check Engine light on
  • Rough idle
  • Misfire, often with P0306
  • Poor acceleration and low power
  • Worse fuel economy
  • Hard starting
  • Possible fuel smell

Possible causes

  1. Failed cylinder 6 fuel injector (open or shorted coil)
  2. Damaged wiring or corroded injector connector
  3. Open or short in the harness between injector and module
  4. Poor ground, blown fuse or faulty injector power relay
  5. Faulty injector driver inside the engine control module

How to diagnose

  1. Read codes and freeze frame data and look for P0306 or other injector codes
  2. Inspect the cylinder 6 injector connector and harness for damage, corrosion and chafing
  3. Check the fuse and relay feeding the injectors
  4. Measure the injector coil resistance and compare it with the manufacturer spec
  5. Check for power and a control signal at the connector with a multimeter, test light or scope
  6. Test the wire from the connector to the module for continuity and shorts to ground or voltage
  7. Swap the injector with a neighboring cylinder and see whether the fault follows it
  8. If the circuit tests good, evaluate the module driver

Common fixes

  • Replace the cylinder 6 fuel injector
  • Repair the wiring or replace the injector connector
  • Replace the fuse or relay and restore the ground
  • Repair or replace the control module if the driver failure is confirmed

P0206 on different brands

Ford · manuals
Ford documents an extended code, P0206:92, in its 2024-2025 gasoline-engine diagnostics as a cylinder 6 injector circuit range/performance condition; it describes what the monitor detected, not a confirmed failed part.

Questions and answers

What does P0206 mean?

It means the engine computer detected an electrical fault in the cylinder 6 injector circuit, such as an open, short or abnormal resistance. The injector, wiring or module could be at fault.

Can I drive with P0206?

Only briefly and carefully, until it is repaired. Misfires can harm the catalytic converter and increase fuel use, so don't put it off.

Should I replace the injector right away?

No. First check the connector, wiring, fuse and injector resistance. Replace the injector only if the circuit is good and the injector fails testing.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.