What does it mean?
P1182 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Supercharger Inlet Pressure (SCIP) Sensor Performance .
Symptoms
- Check engine light on
- Noticeable loss of boost and reduced power under acceleration
- Engine may limit power or enter limp mode on some applications
- Uneven idle and hesitation when the boost system engages
- Higher fuel consumption
- Whistling or hissing from the intake if a duct leak is causing the fault
Likely causes
- Blocked, kinked, cracked or oil-filled pressure reference hose to the sensor
- Sensor element drifted or fouled by oil mist from the crankcase ventilation system
- Leak in the intake ducting between the air filter and the supercharger inlet
- Supercharger bypass valve stuck, so the pressure at the inlet never matches expectation
- High resistance in the signal or ground wiring, corroded connector pins
- Restricted air filter creating an unusually large depression at the inlet
- Rarely, a control module input or calibration fault
How to fix it
- With the engine off and the ignition on, compare the sensor reading with barometric pressure and with the manifold pressure sensor; all should read close to atmospheric
- Watch the sensor value during acceleration and check that it changes smoothly with engine load
- Remove and inspect the reference hose for oil, cracks, kinks or blockage
- Check the intake ducting and clamps between the filter and the supercharger inlet for leaks
- Inspect the crankcase ventilation system, since oil mist fouls this sensor
- Test the signal, reference and ground circuits for continuity and voltage drop
- Replace the sensor if it still reads implausibly with good plumbing and wiring, then verify boost values on a road test