Fuel and air

P0207 — Cylinder 7 Fuel Injector Circuit Malfunction

Severity: medium Drive with care, to a shop

What P0207 means

P0207 means the engine control module detected a fault in the electrical circuit of the cylinder 7 fuel injector. The module pulses the injector open for a precise time and monitors voltage and current in the circuit. When the signal is open, shorted or out of range, it stores the code and turns on the check engine light.

Symptoms

  • Check engine light on
  • Rough or shaky idle
  • Misfire on cylinder 7, often with P0307
  • Loss of power and weak acceleration
  • Poor fuel economy
  • Hard starting
  • Fuel smell from the exhaust

Possible causes

  1. Failed cylinder 7 fuel injector (open or shorted coil)
  2. Damaged wiring harness: open, short or chafed insulation
  3. Corroded or loose injector connector
  4. Poor ground or power supply to the injectors
  5. Failed injector driver inside the ECM (rare)

How to diagnose

  1. Scan all codes and freeze frame data; look for P0307 or other injector codes
  2. Inspect the cylinder 7 injector connector and harness for rubbing, corrosion or heat damage
  3. Measure injector coil resistance and compare with the manufacturer spec
  4. Check for power and ground at the injector connector
  5. Test the control signal with a noid light or oscilloscope
  6. Swap the injector with a neighboring cylinder and see if the code follows
  7. Review fuel trims and cylinder balance, and check fuel pressure
  8. Test wiring continuity back to the ECM; suspect the driver last

Common fixes

  • Repair or replace the damaged injector wiring or connector
  • Replace the faulty cylinder 7 injector
  • Fix power or ground supply problems in the circuit
  • Replace or reprogram the ECM only if the driver is confirmed faulty

P0207 on different brands

Ford · manuals
Ford uses the extended code P0207:92 in its 2024-2025 gasoline engine monitoring as a cylinder 7 injector circuit range/performance condition; it describes the detected condition, not a confirmed failed part.

Questions and answers

What does P0207 mean?

It is an electrical fault in the cylinder 7 injector circuit. The cause can be the injector, wiring, connector or, less often, the engine computer.

Can I drive with P0207?

Only briefly, until it is repaired. Misfires can damage the catalytic converter, and power and fuel economy suffer.

Do I need to replace the injector right away?

No. Check the connector, harness, power and injector resistance first, since wiring or contact problems are common causes.

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.