P0206 code: Injector Circuit/Open - Cylinder 6
P0206 means injector Circuit/Open - Cylinder 6. The code says where to look, not what failed — the fix depends on which cause your car actually has.
What P0206 means
P0206 flags an electrical fault in the circuit that fires the cylinder 6 fuel injector. The engine computer pulses each injector and verifies the circuit responds correctly; here it caught an open, a short, or resistance outside spec on cylinder 6. Because the failure is electrical, it is a different animal from a clogged injector — fuel-system cleaners are irrelevant to this code. Work through the likely causes cheapest-first: a connector that's corroded, loose, or was left unplugged after other service; wiring chafed through against a hot or sharp edge; then the injector's own coil winding failing open or shorted. A dead injector driver inside the engine computer is possible but genuinely uncommon. Expect cylinder 6 to be missing entirely, which is why the P0306 misfire code so often rides along.
P0206 symptoms
- Cylinder 6 dead or cutting in and out — P0306 commonly set as well
- Rough idle you can feel through the steering wheel and seat
- Down-on-power feel, worst under acceleration
- Check-engine light, flashing if the misfire is active
- Occasionally hard or extended starting
What it costs to fix P0206
Typical range: $80–$550 · about ~0.5–2 hrs of labor
| If the cause is… | Part | Labor |
|---|---|---|
| Fuel injector (single) | $50–$300 | ~0.5–2 hrs |
| Wiring / connector repair | $10–$60 | ~0.5–1.5 hrs |
On many V6 engines the rear-bank injectors are the hard ones to reach, and some designs require pulling the intake manifold — that's what pushes labor to the top of the range. Figures are for common gasoline port and direct-injection engines; diesel and high-pressure DI injectors cost considerably more.
The price swings on which cause it turns out to be — so confirm the cause before paying. Diagnose P0206 for my exact vehicle →
How to fix P0206
Moderate — doable at home with common tools and patience
- Locate cylinder 6 and plan access
Cylinder 6 means a six-cylinder or larger engine. On an inline-six it is the last cylinder, usually closest to the firewall where heat collects; on a V6 it is the end of one bank, and on many transverse layouts that bank faces the firewall. Knowing which tells you whether the connector is a quick reach or a long one.
- Plug a noid light into the cylinder 6 connector
Unplug injector 6, fit the noid light that matches the connector style, and crank the engine. A steady flashing light shows the feed and the computer's pulse both arrive, shifting blame to the injector; no flash means a wiring or driver fault, and a solid glow suggests the control wire is shorted to ground.
- Ohm the injector across its pins
Most modern port injectors are high-impedance types, often quoted at roughly 11–18 ohms, but the best yardstick is the other injectors on the same engine. Open means a broken winding; a very low reading means shorted turns — either way injector 6 needs replacing.
- Inspect heat-damaged wiring near the back of the engine
The harness branch to cylinder 6 often runs closest to the exhaust or the firewall heat pocket. Look for insulation that cracks when flexed and latches that crumble; heat-brittle wire tends to fail at the bend just behind the plug, so slide the loom back and check that stretch too.
- Fit a new injector or fix the circuit
A failed injector gets replaced with new seals and a leak check before start-up; damaged wiring gets spliced with heat-rated wire and covered in fresh loom. If the noid light stayed dark and the wiring is sound end to end, the engine computer's driver is the remaining suspect, and that is a programming job.
DIY or shop? A noid light and multimeter make this one of the friendlier circuit diagnoses, and on an inline-six the injector usually sits along the top of the engine within easy reach. On a transverse V6 with cylinder 6 at the firewall, injector replacement may mean pulling the plenum, which most owners hand to a shop. Don't use a noid light on direct-injection engines — their drive voltage is far higher, and the service manual's procedure applies.
Tools for the DIY steps: Noid light set · Digital multimeter · Flashlight · Fuel injector O-ring kit · Heat-rated wire and loom
Not sure which step applies to your car? Get the likely cause for your exact vehicle before buying anything for P0206.
Start a case with P0206 and your car. Redline weighs these causes against what your car shows, and names the check that would settle it before you buy parts.
Can I drive with P0206?
Redline can’t determine from a symptom or code alone whether your car is safe to drive.
P0206: common questions
What's a noid light and why would I use one for P0206?
A noid light is a cheap tester that plugs into the injector connector in place of the injector. If it flashes while cranking, the computer and wiring are delivering the pulse and the injector itself is the suspect. If it stays dark, the fault is upstream in the wiring, connector, or computer.
Can I drive to the shop with P0206?
There's no way to judge that from the code alone. The concern is catalytic-converter damage from the unburned fuel of a dead cylinder, which builds the longer the engine runs that way, so get it repaired promptly — and if the light is flashing, don't drive it; have it towed.
Which cylinder is number 6 on my engine?
There's no universal answer — numbering conventions differ by manufacturer and engine layout. On a V6 it may be the last cylinder on either bank depending on the brand. Confirm with a cylinder-layout diagram for your specific engine before testing.
Could the engine computer itself cause P0206?
It can, but it's the least likely cause and should be the last thing you condemn. Rule out the connector, the harness wiring, and the injector's internal winding first — those account for the overwhelming majority of injector-circuit codes.
Related trouble codes
Don’t have a scanner yet? A ~$25 Bluetooth adapter reads codes like P0206 from your phone. See our guide to the best OBD2 Bluetooth adapters. Run a repair shop? See Redline for shops.
Generic OBD-II reference. Manufacturer-specific behavior varies. Confirm with a scan tool and, for safety-related codes, a professional inspection. Cost ranges are reference ranges, not quotes.
Seeing P0206 on your car?
Every problem becomes a Case. Tell Redline what the car is doing: it shows what the evidence supports, what’s still missing, and what to check next, before you approve a repair.
“Inner pad ~1 mm. Outer pad 3 mm.”
Next: check the slide pins move freely before buying parts.