P0206 on Chevrolet
Injector Circuit/Open - Cylinder 6
P0206 on Chevrolet vehicles indicates injector circuit/open - cylinder 6. Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado 2500HD. 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. Typical repair costs on Chevrolet range from $100 to $800, depending on the specific model and root cause.
Common Causes of P0206
- •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
P0206 on Chevrolet by Model
Chevrolet Silverado 2500HD(1 issue)
- Injector Wiring Harness Chafing (Duramax)2001-2016
The fuel injector wiring harness on the Duramax diesel routes across the top of the engine under the valve covers. The harness rubs against the valve cover and rocker arms, causing the insulation to wear through and the wires to short or open. When an injector wire is damaged, the affected cylinder misfires, the engine runs rough, and white smoke pours from the exhaust. The chafing is accelerated by engine vibration and can affect multiple cylinders over time. GM released updated harness routing clips but the fundamental design has the harness in a high-wear location.
Looking for P0206 on a different make?
View P0206 across all makes →Frequently Asked Questions
What does P0206 mean on Chevrolet?▼
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. On Chevrolet specifically, this code is documented across 1 model.
What causes P0206 on Chevrolet vehicles?▼
Common causes on Chevrolet: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0206 on a Chevrolet?▼
Repair costs on Chevrolet range from $100 to $800, depending on the specific model and root cause.
Which Chevrolet models have P0206 documented?▼
Au7o has documented P0206 on 1 Chevrolet model: Silverado 2500HD.