P0204 on Volkswagen
Injector Circuit/Open - Cylinder 4
P0204 on Volkswagen vehicles indicates injector circuit/open - cylinder 4. Au7o has documented this code across 1 Volkswagen model — most commonly on Caddy. 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 4. The ECM controls each injector through its own circuit and monitors it to confirm proper operation. P0204 indicates the computer isn't seeing the expected electrical response from cylinder 4's injector, so that cylinder may not be getting the correct fuel. You'll often notice a misfire, rough running, and a loss of power tied to cylinder 4. Typical repair costs on Volkswagen range from $1,600 to $3,800, depending on the specific model and root cause.
Common Causes of P0204
- •Damaged or corroded injector connector at cylinder 4
- •Open or shorted wiring in the injector control circuit
- •Failed (electrically open) fuel injector on cylinder 4
- •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
P0204 on Volkswagen by Model
Volkswagen Caddy(1 issue)
- TDI fuel injector failure (expensive when replaced as a set)2010-2015
The TDI common-rail injectors on the Caddy are a recognised weak point and can fail with little or no warning. When one fails, owners report sputtering, rough running and limp mode. VW workshops generally insist on replacing all injectors together, so the OEM repair runs into the thousands. Frequent short journeys and poor-quality (supermarket) diesel are cited contributors.
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View P0204 across all makes →Frequently Asked Questions
What does P0204 mean on Volkswagen?▼
P0204 stands for "Injector Circuit/Open - Cylinder 4." 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 4. The ECM controls each injector through its own circuit and monitors it to confirm proper operation. P0204 indicates the computer isn't seeing the expected electrical response from cylinder 4's injector, so that cylinder may not be getting the correct fuel. You'll often notice a misfire, rough running, and a loss of power tied to cylinder 4. On Volkswagen specifically, this code is documented across 1 model.
What causes P0204 on Volkswagen vehicles?▼
Common causes on Volkswagen: Damaged or corroded injector connector at cylinder 4, Open or shorted wiring in the injector control circuit, Failed (electrically open) fuel injector on cylinder 4, 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 P0204 on a Volkswagen?▼
Repair costs on Volkswagen range from $1,600 to $3,800, depending on the specific model and root cause.
Which Volkswagen models have P0204 documented?▼
Au7o has documented P0204 on 1 Volkswagen model: Caddy.