P0203 on Skoda
Injector Circuit/Open - Cylinder 3
P0203 on Skoda vehicles indicates injector circuit/open - cylinder 3. Au7o has documented this code across 1 Skoda model — most commonly on Fabia. 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 3. The ECM pulses each injector electrically and watches the circuit to verify it is operating. P0203 means the expected feedback for cylinder 3's injector is missing or abnormal, so that cylinder may not be fueling properly. The typical result is a misfire, rough idle, and reduced performance traceable to cylinder 3. Typical repair costs on Skoda range from $300 to $5,000, depending on the specific model and root cause.
Common Causes of P0203
- •Damaged or corroded injector connector at cylinder 3
- •Open or shorted wiring in the injector control circuit
- •Failed (electrically open) fuel injector on cylinder 3
- •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
P0203 on Skoda by Model
Skoda Fabia(1 issue)
- 1.6 TDI (and 1.4 TDI PD) Diesel Injector / Fuel System Faults2003-2014
Fabia diesels suffer recurring fuel-system problems. On the common-rail 1.6 TDI, owners (PistonHeads, Briskoda) report repeated injector failures - in one case three injectors in a few months - causing misfires, rough running, smoke and limp mode. On the older 1.4 TDI 3-cylinder PD engine, the unit (Pumpe-Duse) injectors and their cam-driven actuation are sensitive to the wrong oil: using non-PD oil can wear the narrow cam lobes, and worn injector seals can dilute the engine oil (rising oil level). Misfuelling or bad fuel can also destroy the high-pressure pump, sending swarf through the system - an expensive (often four-figure) repair.
Looking for P0203 on a different make?
View P0203 across all makes →Frequently Asked Questions
What does P0203 mean on Skoda?▼
P0203 stands for "Injector Circuit/Open - Cylinder 3." 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 3. The ECM pulses each injector electrically and watches the circuit to verify it is operating. P0203 means the expected feedback for cylinder 3's injector is missing or abnormal, so that cylinder may not be fueling properly. The typical result is a misfire, rough idle, and reduced performance traceable to cylinder 3. On Skoda specifically, this code is documented across 1 model.
What causes P0203 on Skoda vehicles?▼
Common causes on Skoda: Damaged or corroded injector connector at cylinder 3, Open or shorted wiring in the injector control circuit, Failed (electrically open) fuel injector on cylinder 3, 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 P0203 on a Skoda?▼
Repair costs on Skoda range from $300 to $5,000, depending on the specific model and root cause.
Which Skoda models have P0203 documented?▼
Au7o has documented P0203 on 1 Skoda model: Fabia.