garajizOBD-II code · manufacturer-specific
P1203
Pump Rotor Control Underfueling
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1203 mean?
P1203 is defined as “Pump Rotor Control Underfueling”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Buick, Cadillac, Chevrolet, Chrysler: (Alternative Fuel) Gas Mass Sensor Circuit High Frequency
- GM, GMC, Oldsmobile, Saturn: Alternative Fuel Gas Mass Sensor Circuit High Frequency
- Volkswagen: Cylinder 3 Fuel Injector Circuit Electrical Malfunction
- Jaguar: Cylinder 3 Injector Circuit Open/Shorted
- Acura, Honda, Infiniti: Cylinder 3 Misfire
- Citroen, Diğer, Peugeot: Injector Circuit Open / Shorted - Cylinder #3
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This page is general information; an exact diagnosis needs measurements and a technician’s check.