OBD-II Code · Fuel & Air
P0207
Injector Circuit Malfunction — Cylinder 7
Severity
high
Left alone, this one tends to take other parts with it.
Can you drive it
Not for long
Driving on this one risks further damage. Get it to a shop rather than carrying on with it.
Indicative cost (USD)
$100–$500
Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
Cylinder 7 injector circuit fault.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then work the likely-causes list in the order shown.
That order is what a shop checks first for this code — wiring and connections before the component they run to, because a connector costs nothing to inspect and is a common answer.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Cyl 7 misfire
- Check engine light
Likely causes
- Failed injector 7Most common
- Wiring
Read the full diagnostic procedureP0207 isolates the cylinder 7 injector circuit, so it only appears on V8, V10, and V12 engines.
P0207 isolates the cylinder 7 injector circuit, so it only appears on V8, V10, and V12 engines. On most domestic V8s (Ford 5.4L, GM LS, Chrysler Hemi) cylinder 7 sits at the rear of the passenger-side bank, which is one of the hottest spots in the engine bay for connector and harness damage from exhaust heat soak.
Cheapest-first ladder
- noid light at the cylinder 7 connector with key-crank to confirm PCM is commanding the injector, resistance check at the injector terminals (port-fuel: 11 to 17 ohms; GDI: 1 to 3 ohms; compare to the other seven cylinders and flag any outlier more than 0.5 ohm off median), and scope the pulse-width waveform looking for a clean square-edge ground pull-down within 0.5V of ground and 2.5 to 3.2 ms pulse-width at warm idle.
- Visually inspect the cylinder 7 pigtail and connector for melted plastic and heat-discolored terminals.
- The expensive misdiagnosis is full injector-set replacement at $1,500 to $2,400 on a Hemi or LS when only the cylinder 7 connector needs a $40 pigtail repair.
Vehicle-specific patterns2007-2013 GM 5.3L and 6.0L LS Silverado, Tahoe, and Yukon throw P0207 famously from melted cylinder 7 Multec injector connectors (GM TSB PIP4568 docu…
- 2007-2013GM 5.3L and 6.0L LS Silverado, Tahoe, and Yukon throw P0207 famously from melted cylinder 7 Multec injector connectors (GM TSB PIP4568 documents the heat-soak failure on the passenger rear);
- 2005-2010Chrysler/Dodge 5.7L Hemi Ram, Charger, and 300C sees P0207 from injector connector corrosion under the valve-cover edge where oil seeps through a failing gasket;
- 2004-2010Ford 5.4L 3V F-150 and Expedition trip P0207 from coolant intrusion at the intake manifold corroding the cylinder 7 injector connector pins (TSB 06-19-8 covers the plastic intake replacement);
- 2003-2008BMW N62 545i/745i V8 sees P0207 with injector solenoid failure on the rear passenger cylinder.
Estimated repair$90 to $1,800.
Look up another code
P0207 — frequently asked
What does a P0207 code mean?
Cylinder 7 injector circuit fault.
What causes a P0207 code?
Common causes: Failed injector 7; Wiring.
What are the symptoms of a P0207 code?
Typical symptoms: Cyl 7 misfire; Check engine light.
Is it safe to drive with a P0207 code?
Not for long. Driving on this one risks further damage. Get it to a shop rather than carrying on with it. Estimated repair: $100-$500.
How do I diagnose a P0207 code?
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed. 1. Note every code that is set, not just this one. 2. Read the freeze frame — the conditions the fault was recorded under. 3. Confirm the fault is current rather than history. 4. Then work the likely-causes list in the order shown.
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