P0203 on Chrysler
Injector Circuit/Open - Cylinder 3
P0203 on Chrysler vehicles indicates injector circuit/open - cylinder 3. Au7o has documented this code across 1 Chrysler model — most commonly on LeBaron. 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 Chrysler range from $100 to $400, 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 Chrysler by Model
Chrysler LeBaron(1 issue)
- Fuel Injector Clogging and Leaking1990-1995
Fuel injectors develop clogs and O-ring leaks from age and fuel deposit buildup. Clogged injectors cause misfires and poor fuel economy. Leaking injector O-rings create a fire hazard from fuel dripping onto the hot engine.
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View P0203 across all makes →Frequently Asked Questions
What does P0203 mean on Chrysler?▼
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 Chrysler specifically, this code is documented across 1 model.
What causes P0203 on Chrysler vehicles?▼
Common causes on Chrysler: 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 Chrysler?▼
Repair costs on Chrysler range from $100 to $400, depending on the specific model and root cause.
Which Chrysler models have P0203 documented?▼
Au7o has documented P0203 on 1 Chrysler model: LeBaron.