P0202 on Chevrolet
Injector Circuit/Open - Cylinder 2
P0202 on Chevrolet vehicles indicates injector circuit/open - cylinder 2. Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado 2500HD. This code means the Engine Control Module detected an electrical problem (open circuit or out-of-range resistance) in the fuel injector control circuit for cylinder 2. The ECM switches each injector on and off through this circuit, and it monitors the circuit to confirm the injector is responding. P0202 indicates the computer isn't getting the expected electrical feedback for that specific injector, so cylinder 2 may not be fueling correctly. This commonly causes a misfire, rough running, and reduced power on that cylinder. Typical repair costs on Chevrolet range from $100 to $4,000, depending on the specific model and root cause.
Common Causes of P0202
- •Damaged or corroded injector connector at cylinder 2
- •Open or shorted wiring in the injector control circuit
- •Failed (electrically open) fuel injector on cylinder 2
- •Loose or backed-out connector pin
- •Poor ground or power feed to the injector
- •Faulty injector driver inside the ECM/PCM
- •Chafed harness causing intermittent open
P0202 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 P0202 across all makes →Frequently Asked Questions
What does P0202 mean on Chevrolet?▼
P0202 stands for "Injector Circuit/Open - Cylinder 2." This code means the Engine Control Module detected an electrical problem (open circuit or out-of-range resistance) in the fuel injector control circuit for cylinder 2. The ECM switches each injector on and off through this circuit, and it monitors the circuit to confirm the injector is responding. P0202 indicates the computer isn't getting the expected electrical feedback for that specific injector, so cylinder 2 may not be fueling correctly. This commonly causes a misfire, rough running, and reduced power on that cylinder. On Chevrolet specifically, this code is documented across 1 model.
What causes P0202 on Chevrolet vehicles?▼
Common causes on Chevrolet: Damaged or corroded injector connector at cylinder 2, Open or shorted wiring in the injector control circuit, Failed (electrically open) fuel injector on cylinder 2, Loose or backed-out connector pin, Poor ground or power feed to the injector. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0202 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 P0202 documented?▼
Au7o has documented P0202 on 1 Chevrolet model: Silverado 2500HD.