P1231 — Oldsmobile
P1231 — Oldsmobile: Injector Circuit Cylinder 4 Intermittent
Code breakdown
P — System
Powertrain (engine, transmission, fuel & emissions)
1 — Type
Manufacturer-specific
2 — Subsystem
Fuel and air metering (injector circuit)
Manufacturer-specific meanings (Oldsmobile)
- Circuito basso secondario pompa carburante, alta velocità (VLCM)
- Injector Circuit Cylinder 4 Intermittent
- High Speed Fuel Pump Relay Activated
- Cylinder 7 Injector Circuit Short To Ground