P0206: Injector Circuit/Open - Cylinder 6
4 vehicles · 3 makes · $100-$5,000 repair
Most Reported On
P0206 is an OBD-II diagnostic trouble code meaning “Injector Circuit/Open - Cylinder 6.” This code means the engine computer detected an electrical problem in the fuel injector circuit for cylinder 6 — specifically an open circuit or one that's out of its expected resistance range. Each injector is an electrically controlled valve that sprays fuel into the cylinder, and the computer monitors that circuit to make sure the injector is responding to its commands. When it sees a break, short, or weak signal on cylinder 6's injector wiring, it sets this code, which usually shows up alongside a rough-running engine or a misfire on that cylinder. It points to a wiring/connector fault or a bad injector rather than a fuel-quality problem. This code is most commonly reported on 2017-2023 Ford Transit, 2001-2016 Chevrolet Silverado 2500HD, and 2015-2024 GMC Sierra 3500HD, plus 1 other vehicle, with repair costs ranging from $100 to $5,000.
Common Causes
Typical Repair Cost
Based on 4 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0206, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (4)
FAQ
What does P0206 mean?
P0206 stands for "Injector Circuit/Open - Cylinder 6." This code means the engine computer detected an electrical problem in the fuel injector circuit for cylinder 6 — specifically an open circuit or one that's out of its expected resistance range. Each injector is an electrically controlled valve that sprays fuel into the cylinder, and the computer monitors that circuit to make sure the injector is responding to its commands. When it sees a break, short, or weak signal on cylinder 6's injector wiring, it sets this code, which usually shows up alongside a rough-running engine or a misfire on that cylinder. It points to a wiring/connector fault or a bad injector rather than a fuel-quality problem.
What are the most common causes of P0206?
The most common causes of P0206 are: Corroded, loose, or damaged injector connector at cylinder 6, Open, shorted, or chafed wiring in the injector circuit, Failed fuel injector (open internal winding), Poor ground or power feed to the injector driver, Failed injector driver circuit inside the ECM/PCM, Water intrusion or pin corrosion in the engine harness. The specific cause varies by vehicle.
How much does it cost to fix P0206?
Repair costs for P0206 range from $100 to $5,000, depending on the vehicle and root cause.
Which vehicles are affected by P0206?
Au7o has documented P0206 across 4 vehicle models from 3 manufacturers: Chevrolet, Ford, GMC.
Sources (8)
- ForumFord Transit USA Forum Thread: Fuel Injector Issues on 2.0L EcoBlue Diesel
- videoEricTheCarGuy - Diagnosing and Replacing Fuel Injectors on Ford Transit 2.0L EcoBlue Diesel
- manufacturerOregon Fuel Injection: Chevrolet-GMC Diesel Diagnostics
- ForumSilveradoSierra: 6.6L Duramax Diesel blowing white smoke
- mediaChevy Trucks: The 3 Most Common Duramax L5P Engine Problems
- mediaDiesel Power Products: Common Duramax Diesel Problems & Fixes LB7 to L5P
- ForumDuramax Forum: 2015 LML blowing white smoke but why
- videoHow to Diagnose and Replace 7.3L Powerstroke Injectors - EricTheCarGuy
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.