Cylinder 7 Injector A Circuit
What it means
P0207 means the ECM has detected an electrical fault — usually an open or short — in the fuel-injector control circuit for cylinder 7. With that injector not firing properly, cylinder 7 misfires, so the engine runs rough, loses power, and may be hard to start. A persistent misfire can overheat and damage the catalytic converter, so address it soon.
Can I keep driving? Drivable but rough — a dead injector means cylinder 7 misfires and the engine loses power; running it long risks catalytic-converter damage, so repair soon.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on (may flash during an active misfire)
- Rough idle and misfire
- Reduced power and hesitation
- Increased fuel consumption
- Possible hard starting
Common causes
Most likely first
- Faulty cylinder 7 fuel injectorLikely
- Open or short in the injector wiringCommon
- Corroded or loose injector connectorCommon
- Injector driver fault inside the ECM/PCMLess often
How to diagnose & fix
Work through it in order
- Scan and read freeze-frame data to confirm the cylinder 7 injector circuit fault.
- Inspect the injector connector and wiring for damage, corrosion, or an open circuit.
- Measure the injector's resistance against specification.
- Verify injector operation (swap-test with another cylinder if practical).
- Replace the injector if faulty, then clear and retest.
FAQ
Quick answers
Is it safe to drive with P0207?+
Can I just clear P0207?+
Related codes
Read & clear P0207 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.