P0201 on Chevrolet
Injector Circuit/Open - Cylinder 1
P0201 on Chevrolet vehicles indicates injector circuit/open - cylinder 1. Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado 2500HD. P0201 means the engine computer detected an electrical problem in the wiring or control circuit for the fuel injector on cylinder 1. The PCM pulses each injector open and back ground, and when it sees an open circuit, a short, or abnormal resistance on cylinder 1's injector circuit, it sets this code. In practice it means cylinder 1 may not be getting fuel injected properly, which can cause a misfire, rough running, or a no-start on that cylinder. It points to the injector itself or its wiring, not to a fuel-pressure problem affecting the whole engine. Typical repair costs on Chevrolet range from $100 to $4,000, depending on the specific model and root cause.
Common Causes of P0201
- •Damaged or corroded injector connector or terminals at cylinder 1
- •Broken, chafed, or shorted injector wiring harness
- •Failed (open or shorted) fuel injector on cylinder 1
- •Loose or poor ground/power feed to the injector circuit
- •Blown injector fuse or relay feeding the bank
- •Failed injector driver inside the PCM/ECM
P0201 on Chevrolet by Model
Chevrolet Silverado 2500HD(2 issues)
- Duramax Diesel Injector Failure2001-2015
Bosch fuel injectors on early Duramax engines develop internal leaks causing rough running, white smoke, and hard starts. LB7 generation (2001-2004) most affected with class action settlement history.
- 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.
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View P0201 across all makes →Frequently Asked Questions
What does P0201 mean on Chevrolet?▼
P0201 stands for "Injector Circuit/Open - Cylinder 1." P0201 means the engine computer detected an electrical problem in the wiring or control circuit for the fuel injector on cylinder 1. The PCM pulses each injector open and back ground, and when it sees an open circuit, a short, or abnormal resistance on cylinder 1's injector circuit, it sets this code. In practice it means cylinder 1 may not be getting fuel injected properly, which can cause a misfire, rough running, or a no-start on that cylinder. It points to the injector itself or its wiring, not to a fuel-pressure problem affecting the whole engine. On Chevrolet specifically, this code is documented across 1 model.
What causes P0201 on Chevrolet vehicles?▼
Common causes on Chevrolet: Damaged or corroded injector connector or terminals at cylinder 1, Broken, chafed, or shorted injector wiring harness, Failed (open or shorted) fuel injector on cylinder 1, Loose or poor ground/power feed to the injector circuit, Blown injector fuse or relay feeding the bank. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0201 on a Chevrolet?▼
Repair costs on Chevrolet range from $100 to $4,000, depending on the specific model and root cause.
Which Chevrolet models have P0201 documented?▼
Au7o has documented P0201 on 1 Chevrolet model: Silverado 2500HD.